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crashed value</title> <meta name="description" content="Search results for: aggregate crashed value"> <meta name="keywords" content="aggregate crashed value"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="aggregate crashed value"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 518</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: aggregate crashed value</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">518</span> Effect of Crashed Stone on Properties of Fly Ash Based-Geopolymer Concrete with Local Alkaline Activator in Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20M.%20Omar">O. M. Omar</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20D.%20Abd%20Elhameed"> G. D. Abd Elhameed</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Heniegal"> A. M. Heniegal</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20A.%20Mohamadien"> H. A. Mohamadien</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Green concrete are generally composed of recycling materials as hundred or partial percent substitutes for aggregate, cement, and admixture in concrete. To reduce greenhouse gas emissions, efforts are needed to develop environmentally friendly construction materials. Using of fly ash based geopolymer as an alternative binder can help reduce CO2 emission of concrete. The binder of geopolymer concrete is different from the ordinary Portland cement concrete. Geopolymer Concrete specimens were prepared with different concentration of NaOH solution M10, M14, and, M16 and cured at 60 ºC in duration of 24 hours and 8 hours, in addition to the curing in direct sunlight. Thus, it is necessary to study the effects of the geopolymer binder on the behavior of concrete. Concrete is made by using geopolymer technology is environmental friendly and could be considered as part of the sustainable development. In this study the Local Alkaline Activator in Egypt and dolomite as coarse aggregate in fly ash based-geopolymer concrete was investigated. This paper illustrates the development of mechanical properties. Since the gained compressive strength for geopolymer concrete at 28 days was in the range of 22.5MPa – 43.9MPa. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=geopolymer" title="geopolymer">geopolymer</a>, <a href="https://publications.waset.org/abstracts/search?q=molarity" title=" molarity"> molarity</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20hydroxide" title=" sodium hydroxide"> sodium hydroxide</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20silicate" title=" sodium silicate"> sodium silicate</a> </p> <a href="https://publications.waset.org/abstracts/38420/effect-of-crashed-stone-on-properties-of-fly-ash-based-geopolymer-concrete-with-local-alkaline-activator-in-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38420.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">291</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">517</span> The Influence of Coarse Aggregate Morphology on Concrete Workability: A Case Study with Algerian Crushed Limestone</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Boufedah%20Badissi">Ahmed Boufedah Badissi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Beroual"> Ahmed Beroual</a>, <a href="https://publications.waset.org/abstracts/search?q=Farid%20Boursas"> Farid Boursas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research aims to elucidate the role of coarse aggregate in influencing the fresh properties of normal-strength concrete. Specifically, it is aimed to identify the optimal gradation of coarse aggregate to enhance workability. While existing literature discusses the impact of aggregate granularity on concrete workability, more numerical data or models need to quantify the relationship between workability, granularity, and coarse aggregate shape. The main objective is to create a model that describes how coarse aggregate morphology contributes to fresh concrete properties. To investigate the effect of coarse aggregate gradation on Normal Strength Concrete (NSC) workability, various combinations of coarse aggregates (4/22.4 mm) were produced in the laboratory, utilizing three elementary classes: finer coarse aggregate 4/8 mm (Fca), medium coarse aggregate 8/16 mm (Mca), and coarser coarse aggregate 16/22.4 mm (Cca). We introduced a factor, FCR (Finer to Coarser coarse aggregate Ratio), as a numerical parameter to provide a quantitative evaluation and more detailed results analysis. Quantitative characterization parameters for coarse aggregate morphology were established, exploring the influence of particle size distribution, specific surface, and aggregate shape on workability. The research findings are significant for establishing correlations between coarse aggregate morphology and concrete properties. FCR emerges as a valuable tool for predicting the impact of aggregate gradation variations on concrete. The results of this study create a valuable database for construction professionals and concrete producers, affirming that the fresh properties of NSC are intricately linked to coarse aggregate morphology, particularly gradation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=morphology" title="morphology">morphology</a>, <a href="https://publications.waset.org/abstracts/search?q=coarse%20aggregate" title=" coarse aggregate"> coarse aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=workability" title=" workability"> workability</a>, <a href="https://publications.waset.org/abstracts/search?q=fresh%20properties" title=" fresh properties"> fresh properties</a>, <a href="https://publications.waset.org/abstracts/search?q=gradation" title=" gradation"> gradation</a> </p> <a href="https://publications.waset.org/abstracts/181529/the-influence-of-coarse-aggregate-morphology-on-concrete-workability-a-case-study-with-algerian-crushed-limestone" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/181529.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">62</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">516</span> Development of Recycled-Modified Asphalt Using Basalt Aggregate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dong%20Wook%20Lee">Dong Wook Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Seung%20Hyun%20Kim"> Seung Hyun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeongho%20Oh"> Jeongho Oh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With the strengthened regulation on the mandatory use of recycled aggregate, development of construction materials using recycled aggregate has recently increased. This study aimed to secure the performance of asphalt concrete mixture by developing recycled-modified asphalt using recycled basalt aggregate from the Jeju area. The strength of the basalt aggregate from the Jeju area used in this study was similar to that of general aggregate, while the specific surface area was larger due to the development of pores. Modified asphalt was developed using a general aggregate-recycled aggregate ratio of 7:3, and the results indicated that the Marshall stability increased by 27% compared to that of asphalt concrete mixture using only general aggregate, and the flow values showed similar levels. Also, the indirect tensile strength increased by 79%, and the toughness increased by more than 100%. In addition, the TSR for examining moisture resistance was 0.95 indicating that the reduction in the indirect tensile strength due to moisture was very low (5% level), and the developed recycled-modified asphalt could satisfy all the quality standards of asphalt concrete mixture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asphalt%20concrete%20mixture" title="asphalt concrete mixture">asphalt concrete mixture</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20grade" title=" performance grade"> performance grade</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20basalt%20aggregate" title=" recycled basalt aggregate"> recycled basalt aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled-modified%20asphalt" title=" recycled-modified asphalt"> recycled-modified asphalt</a> </p> <a href="https://publications.waset.org/abstracts/39062/development-of-recycled-modified-asphalt-using-basalt-aggregate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39062.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">358</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">515</span> Study on Brick Aggregate Made Pervious Concrete at Zero Fine Level</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Monjurul%20Hasan">Monjurul Hasan</a>, <a href="https://publications.waset.org/abstracts/search?q=Golam%20Kibria"> Golam Kibria</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdus%20Salam"> Abdus Salam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pervious concrete is a form of lightweight porous concrete, obtained by eliminating the fine aggregate from the normal concrete mix. The advantages of this type of concrete are lower density, lower cost due to lower cement content, lower thermal conductivity, relatively low drying shrinkage, no segregation and capillary movement of water. In this paper an investigation is made on the mechanical response of the pervious concrete at zero fine level (zero fine concrete) made with local brick aggregate. Effect of aggregate size variation on the strength, void ratio and permeability of the zero fine concrete is studied. Finally, a comparison is also presented between the stone aggregate made pervious concrete and brick aggregate made pervious concrete. In total 75 concrete cylinder were tested for compressive strength, 15 cylinder were tested for void ratio and 15 cylinder were tested for permeability test. Mix proportion (cement: Coarse aggregate) was kept fixed at 1:6 (by weights), where water cement ratio was valued 0.35 for preparing the sample specimens. The brick aggregate size varied among 25mm, 19mm, 12mm. It has been found that the compressive strength decreased with the increment of aggregate size but permeability increases and concrete made with 19mm maximum aggregate size yields the optimum value. No significant differences on the strength and permeability test are observed between the brick aggregate made zero fine concrete and stone aggregate made zero fine concrete. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pervious%20concrete" title="pervious concrete">pervious concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=brick%20aggregate%20concrete" title=" brick aggregate concrete"> brick aggregate concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=zero%20fine%20concrete" title=" zero fine concrete"> zero fine concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=permeability" title=" permeability"> permeability</a>, <a href="https://publications.waset.org/abstracts/search?q=porosity" title=" porosity"> porosity</a> </p> <a href="https://publications.waset.org/abstracts/45799/study-on-brick-aggregate-made-pervious-concrete-at-zero-fine-level" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45799.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">555</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">514</span> Aggregate Production Planning Framework in a Multi-Product Factory: A Case Study </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ignatio%20Madanhire">Ignatio Madanhire</a>, <a href="https://publications.waset.org/abstracts/search?q=Charles%20Mbohwa"> Charles Mbohwa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study looks at the best model of aggregate planning activity in an industrial entity and uses the trial and error method on spreadsheets to solve aggregate production planning problems. Also linear programming model is introduced to optimize the aggregate production planning problem. Application of the models in a furniture production firm is evaluated to demonstrate that practical and beneficial solutions can be obtained from the models. Finally some benchmarking of other furniture manufacturing industries was undertaken to assess relevance and level of use in other furniture firms <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggregate%20production%20planning" title="aggregate production planning">aggregate production planning</a>, <a href="https://publications.waset.org/abstracts/search?q=trial%20and%20error" title=" trial and error"> trial and error</a>, <a href="https://publications.waset.org/abstracts/search?q=linear%20programming" title=" linear programming"> linear programming</a>, <a href="https://publications.waset.org/abstracts/search?q=furniture%20industry" title=" furniture industry "> furniture industry </a> </p> <a href="https://publications.waset.org/abstracts/13776/aggregate-production-planning-framework-in-a-multi-product-factory-a-case-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13776.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">556</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">513</span> Construction of Green Aggregates from Waste Processing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fahad%20K.%20Alqahtani">Fahad K. Alqahtani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays construction industry is developing means to incorporate waste products in concrete to ensure sustainability. To meet the need of construction industry, a synthetic aggregate was developed using optimized technique called compression moulding press technique. The manufactured aggregate comprises mixture of plastic, waste which acts as binder, together with by-product waste which acts as fillers. The physical properties and microstructures of the inert materials and the manufactured aggregate were examined and compared with the conventional available aggregates. The outcomes suggest that the developed aggregate has potential to be used as substitution of conventional aggregate due to its less weight and water absorption. The microstructure analysis confirmed the efficiency of the manufacturing process where the final product has the same mixture of binder and filler. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fly%20ash" title="fly ash">fly ash</a>, <a href="https://publications.waset.org/abstracts/search?q=plastic%20waste" title=" plastic waste"> plastic waste</a>, <a href="https://publications.waset.org/abstracts/search?q=quarry%20fine" title=" quarry fine"> quarry fine</a>, <a href="https://publications.waset.org/abstracts/search?q=red%20sand" title=" red sand"> red sand</a>, <a href="https://publications.waset.org/abstracts/search?q=synthetic%20aggregate" title=" synthetic aggregate"> synthetic aggregate</a> </p> <a href="https://publications.waset.org/abstracts/94436/construction-of-green-aggregates-from-waste-processing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94436.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">230</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">512</span> Analysis of Possibilities for Using Recycled Concrete Aggregate in Concrete Pavement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Pernicova">R. Pernicova</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Dobias"> D. Dobias</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present article describes the limits of using recycled concrete aggregate (denoted as RCA) in the top layer of concrete roads. The main aim of this work is to investigate the possibility of reuse of recycled aggregates obtained by crushing the old concrete roads as a building material in the new top layers of concrete pavements. The paper is based on gathering the current knowledge about how to use recycled concrete aggregate, suitability, and modification of the properties and its standards. Regulations are detailed and described especially for European Union and for Czech Republic. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete" title="concrete">concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=Czech%20republic" title=" Czech republic"> Czech republic</a>, <a href="https://publications.waset.org/abstracts/search?q=pavements" title=" pavements"> pavements</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20concrete%20aggregate" title=" recycled concrete aggregate"> recycled concrete aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=RCA" title=" RCA"> RCA</a>, <a href="https://publications.waset.org/abstracts/search?q=standards" title=" standards"> standards</a> </p> <a href="https://publications.waset.org/abstracts/50744/analysis-of-possibilities-for-using-recycled-concrete-aggregate-in-concrete-pavement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50744.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">455</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">511</span> Comparative Study of Natural Coarse Aggregate Concrete with Recycled Concrete Aggregate Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Saadiq">Ahmad Saadiq</a>, <a href="https://publications.waset.org/abstracts/search?q=Neeraj%20Sahu"> Neeraj Sahu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The partial or full replacement of natural coarse aggregate by recycled concrete aggregate (RCA) is of great benefit to the environment, as the demand of natural coarse aggregate reduces. In the modern construction and practice, the use of RCA is limited to backfilling and road construction. The establishment of RCA for its wide application can only be done after having an understanding of the use of RCA in conventional concrete. To have an insight to this, various tests to determine the compressive strength, elastic strength, workability, durability and drying shrinkage tests can be done and the test results may be different from that obtained from natural coarse aggregates, by using natural coarse aggregate in concrete. This paper gives a comprehensive review of the said tests done on RCA concrete. The results obtained from the tests indicate that RCA concrete gives comparable compressive strength, stiffness, and workability relative to the corresponding results obtained from the natural coarse aggregates. However, the durability and drying shrinkage had more variance but well within recommended limits. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggregate" title="aggregate">aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive%20strength" title=" compressive strength"> compressive strength</a>, <a href="https://publications.waset.org/abstracts/search?q=durability" title=" durability"> durability</a>, <a href="https://publications.waset.org/abstracts/search?q=modulus%20of%20elasticity" title=" modulus of elasticity"> modulus of elasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20concrete" title=" recycled concrete"> recycled concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=shrinkage" title=" shrinkage"> shrinkage</a>, <a href="https://publications.waset.org/abstracts/search?q=workability" title=" workability"> workability</a> </p> <a href="https://publications.waset.org/abstracts/88714/comparative-study-of-natural-coarse-aggregate-concrete-with-recycled-concrete-aggregate-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88714.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">284</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">510</span> Development of Non-Structural Crushed Palm Kernel Shell Fine Aggregate Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kazeem%20K.%20Adewole">Kazeem K. Adewole</a>, <a href="https://publications.waset.org/abstracts/search?q=Ismail%20A.%20Yahya"> Ismail A. Yahya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the published literature, Palm Kernel Shell (PKS), an agricultural waste has largely been used as a large aggregate in PKS concrete production. In this paper, the development of Crushed Palm Kernel Shell Fine Aggregate Concrete (CPKSFAC) with crushed PKS (CPKS) as the fine aggregate and granite as the coarse aggregate is presented. 100mm x 100mm x 100mm 1:11/2:3 and 1:2:4 CPKSFAC and River Sand Fine Aggregate Concrete (RSFAC) cubes were molded, cured for 28 days and subjected to a compressive strength test. The average wet densities of the 1:11/2:3 and 1:2:4 CPKSFAC cubes are 2240kg/m3 and 2335kg/m3 respectively. The average wet densities of the 1:11/2:3 and 1:2:4 RSFAC cubes are 2606kg/m3 and 2553kg/m3 respectively. The average compressive strengths of the 1:11/2:3 and 1:2:4 CPKSFAC cubes are 15.40MPa and 14.30MPa respectively. This study demonstrates that CPKSFA is suitable for the production of non-structural C8/10 and C12/15 concrete specified in BS EN 206-1:2000. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=crushed%20palm%20kernel%20shell" title="crushed palm kernel shell">crushed palm kernel shell</a>, <a href="https://publications.waset.org/abstracts/search?q=fine%20aggregate" title=" fine aggregate"> fine aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=lightweight%20concrete" title=" lightweight concrete"> lightweight concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=non-structural%20concrete" title=" non-structural concrete"> non-structural concrete</a> </p> <a href="https://publications.waset.org/abstracts/41095/development-of-non-structural-crushed-palm-kernel-shell-fine-aggregate-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41095.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">425</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">509</span> Laboratory Evaluation of Asphalt Concrete Prepared with Over Burnt Brick Aggregate Treated by Zycosoil</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Sarkar">D. Sarkar</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Pal"> M. Pal</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20K.%20Sarkar"> A. K. Sarkar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Asphaltic concrete for pavement construction in India are produced by using crushed stone, gravels etc. as aggregate. In north-Eastern region of India, there is a scarcity o f stone aggregate. Therefore the road engineers are always in search of an optional material as aggregate which can replace the regularly used material. The purpose of this work was to evaluate the utilization of substandard or marginal aggregates in flexible pavement construction. The investigation was undertaken to evaluate the effects of using lower quality aggregates such as over burnt brick aggregate on the preparation of asphalt concrete for flexible pavements. The scope of this work included a review of available literature and existing data, a laboratory evaluation organized to determine the effects of marginal aggregates and potential techniques to upgrade these substandard materials, and a laboratory evaluation of these upgraded marginal aggregate asphalt mixtures. Over burnt brick aggregates are water susceptible and can leads to moisture damage. Moisture damage is the progressive loss of functionality of the material owing to loss of the adhesion bond between the asphalt binder and the aggregate surface. Hence, zycosoil as an anti striping additive were evaluated in this study. This study summarizes the results of the laboratory evaluation carried out to investigate the properties of asphalt concrete prepared with zycosoil modified over burnt brick aggregate. Marshall specimen were prepared with stone aggregate, zycosoil modified stone aggregate, over burnt brick aggregate and zycosoil modified over burnt brick aggregate. Results show that addition of zycosoil with stone aggregate increased stability by 6% and addition of zycosoil with over burnt brick aggregate increased stability by 30%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asphalt%20concrete" title="asphalt concrete">asphalt concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=over%20burnt%20brick%20aggregate" title=" over burnt brick aggregate"> over burnt brick aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=marshall%20stability" title=" marshall stability"> marshall stability</a>, <a href="https://publications.waset.org/abstracts/search?q=zycosoil" title=" zycosoil"> zycosoil</a> </p> <a href="https://publications.waset.org/abstracts/10998/laboratory-evaluation-of-asphalt-concrete-prepared-with-over-burnt-brick-aggregate-treated-by-zycosoil" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10998.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">357</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">508</span> Compressive Strength and Capillary Water Absorption of Concrete Containing Recycled Aggregate </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ye%C5%9Fim%20Tosun">Yeşim Tosun</a>, <a href="https://publications.waset.org/abstracts/search?q=Remzi%20%C5%9Eahin"> Remzi Şahin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents results of compressive strength, capillary water absorption, and density tests conducted on concrete containing recycled aggregate (RCA) which is obtained from structural waste generated by the construction industry in Turkey. In the experiments, 0%, 15%, 30%, 45% and 60% of the normal (natural) coarse aggregate was replaced by the recycled aggregate. Maximum aggregate particle sizes were selected as 16 mm, 22,4 mm and 31,5 mm; and 0,06%, 0,13% and 0,20% of air-entraining agent (AEA) were used in mixtures. Fly ash and superplasticizer were used as a mineral and chemical admixture, respectively. The same type (CEM I 42.5) and constant dosage of cement were used in the study. Water/cement ratio was kept constant as 0.53 for all mixture. It was concluded that capillary water absorption, compressive strength, and density of concrete decreased with increasing RCA ratio. Increasing in maximum aggregate particle size and amount of AEA also affect the properties of concrete significantly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=capillary%20water%20absorption" title="capillary water absorption">capillary water absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive%20strength" title=" compressive strength"> compressive strength</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20concrete%20aggregates" title=" recycled concrete aggregates "> recycled concrete aggregates </a> </p> <a href="https://publications.waset.org/abstracts/29454/compressive-strength-and-capillary-water-absorption-of-concrete-containing-recycled-aggregate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29454.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">312</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">507</span> Improvement of Performance for R. C. Beams Made from Recycled Aggregate by Using Non-Traditional Admixture</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20H.%20Yehia">A. H. Yehia</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20M.%20Rashwan"> M. M. Rashwan</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20A.%20Assaf"> K. A. Assaf</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Abd%20el%20Samee"> K. Abd el Samee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this work is to use an environmental, cheap; organic non-traditional admixture to improve the structural behavior of sustainable reinforced concrete beams contains different ratios of recycled concrete aggregate. The used admixture prepared by using wastes from vegetable oil industry. Under and over reinforced concrete beams made from natural aggregate and different ratios of recycled concrete aggregate were tested under static load until failure. Eight beams were tested to investigate the performance and mechanism effect of admixture on improving deformation characteristics, modulus of elasticity and toughness of tested beams. Test results show efficiency of organic admixture on improving flexural behavior of beams contains 20% recycled concrete aggregate more over the other ratios. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deflection" title="deflection">deflection</a>, <a href="https://publications.waset.org/abstracts/search?q=modulus%20of%20elasticity" title=" modulus of elasticity"> modulus of elasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=non-traditional%20admixture" title=" non-traditional admixture"> non-traditional admixture</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20concrete%20aggregate" title=" recycled concrete aggregate"> recycled concrete aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=strain" title=" strain"> strain</a>, <a href="https://publications.waset.org/abstracts/search?q=toughness" title=" toughness"> toughness</a>, <a href="https://publications.waset.org/abstracts/search?q=under%20and%20over%20reinforcement" title=" under and over reinforcement"> under and over reinforcement</a> </p> <a href="https://publications.waset.org/abstracts/7134/improvement-of-performance-for-r-c-beams-made-from-recycled-aggregate-by-using-non-traditional-admixture" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7134.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">465</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">506</span> Impact of the Quality of Aggregate on the Elasticity Modulus of Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Krizova">K. Krizova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This objective of this article is to present concrete that differs by the size of the aggregate used. The set of concrete contained six concrete recipes manufactured as traditional vibrated concrete containing identical basic components of concrete. The experiment focused on monitoring the resulting properties of hardened concrete, specifically the primary strength and modulus of the concrete elasticity and the developing parameters from 7 to 180 days were assessed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggregate" title="aggregate">aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=cement" title=" cement"> cement</a>, <a href="https://publications.waset.org/abstracts/search?q=concrete" title=" concrete"> concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=elasticity%20modulus" title=" elasticity modulus"> elasticity modulus</a> </p> <a href="https://publications.waset.org/abstracts/38600/impact-of-the-quality-of-aggregate-on-the-elasticity-modulus-of-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38600.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">315</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">505</span> Development of a Double Coating Technique for Recycled Concrete Aggregates Used in Hot-mix Asphalt </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abbaas%20I.%20Kareem">Abbaas I. Kareem</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Nikraz"> H. Nikraz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of recycled concrete aggregates (RCAs) in hot-mix asphalt (HMA) production could ease natural aggregate shortage and maintain sustainability in modern societies. However, it was the attached cement mortar and other impurities that make the RCAs behave differently than high-quality aggregates. Therefore, different upgrading treatments were suggested to enhance its properties before being used in HMA production. Disappointedly, some of these treatments had caused degradation to some RCA properties. In order to avoid degradation, a coating technique is developed. This technique is based on combining of two main treatments, so it is named as double coating technique (DCT). Dosages of 0%, 20%, 40% and 60% uncoated RCA, RCA coated with Cement Slag Paste (CSP), and Double Coated Recycled Concrete Aggregates (DCRCAs) in place of granite aggregates were evaluated. The results indicated that the DCT improves strength and reduces water absorption of the DCRCAs compared with uncoated RCAs and RCA coated with CSP. In addition, the DCRCA asphalt mixtures exhibit stability values higher than those obtained for mixes made with granite aggregates, uncoated RCAs and RCAs coated with CSP. Also, the DCRCA asphalt mixtures require less bitumen to achieve the optimum bitumen content (OBC) than those manufactured with uncoated RCA and RCA-coated with CSP. Although the results obtained were encouraging, more testing is required in order to examine the effect of the DCT on performance properties of DCRCA- asphalt mixtures such as rutting and fatigue. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggregate%20crashed%20value" title="aggregate crashed value">aggregate crashed value</a>, <a href="https://publications.waset.org/abstracts/search?q=double%20coating%20technique" title=" double coating technique"> double coating technique</a>, <a href="https://publications.waset.org/abstracts/search?q=hot%20mix%20asphalt" title=" hot mix asphalt"> hot mix asphalt</a>, <a href="https://publications.waset.org/abstracts/search?q=Marshall%20parameters" title=" Marshall parameters"> Marshall parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20concrete%20aggregates" title=" recycled concrete aggregates"> recycled concrete aggregates</a> </p> <a href="https://publications.waset.org/abstracts/90728/development-of-a-double-coating-technique-for-recycled-concrete-aggregates-used-in-hot-mix-asphalt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90728.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">287</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">504</span> Durability Aspects of Recycled Aggregate Concrete: An Experimental Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Smitha%20Yadav">Smitha Yadav</a>, <a href="https://publications.waset.org/abstracts/search?q=Snehal%20Pathak"> Snehal Pathak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aggregate compositions in the construction and demolition (C&D) waste have potential to replace normal aggregates. However, to re-utilise these aggregates, the concrete produced with these recycled aggregates needs to provide the desired compressive strength and durability. This paper examines the performance of recycled aggregate concrete made up of 60% recycled aggregates of 20 mm size in terms of durability tests namely rapid chloride permeability, drying shrinkage, water permeability, modulus of elasticity and creep without compromising the compressive strength. The experimental outcome indicates that recycled aggregate concrete provides strength and durability same as controlled concrete when processed for removal of adhered mortar. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=compressive%20strength" title="compressive strength">compressive strength</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20aggregate" title=" recycled aggregate"> recycled aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=shrinkage" title=" shrinkage"> shrinkage</a>, <a href="https://publications.waset.org/abstracts/search?q=rapid%20chloride%20permeation%20test" title=" rapid chloride permeation test"> rapid chloride permeation test</a>, <a href="https://publications.waset.org/abstracts/search?q=modulus%20of%20elasticity" title=" modulus of elasticity"> modulus of elasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20permeability" title=" water permeability"> water permeability</a> </p> <a href="https://publications.waset.org/abstracts/80925/durability-aspects-of-recycled-aggregate-concrete-an-experimental-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80925.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">315</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">503</span> Moisture Impact on the Utilization of Recycled Concrete Fine Aggregate to Produce Mortar </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rahimullah%20Habibzai">Rahimullah Habibzai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To achieve a sustainable concrete industry, reduce exploitation of the natural aggregate resources, and mitigate waste concrete environmental burden, one way is to use recycled concrete aggregate. The utilization of low-quality fine aggregate inclusively recycled concrete sand that is produced from crushing waste concrete recently has become a popular and challenging topic among researchers nowadays. This study provides a scientific base for promoting the application of concrete waste as fine aggregate in producing concrete by conducting a comprehensive laboratory program. The mechanical properties of mortar made from recycled concrete fine aggregate (RCFA), that is produced by pulse power crushing concrete waste are satisfactory and capable of being utilized in the construction industry. A better treatment of RCFA particles and enhancing its quality will make it possible to be utilized in producing structural concrete. Pulse power discharge technology is proposed in this research to produce RCFA, which is a more effective and promising technique compared to other recycling methods to generate medium to high-quality recycled concrete fine aggregate with a reduced amount of powder, mitigate the environmental burden, and save more space. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=construction%20and%20demolition%20waste" title="construction and demolition waste">construction and demolition waste</a>, <a href="https://publications.waset.org/abstracts/search?q=concrete%20waste%20recycle%20fine%20aggregate" title=" concrete waste recycle fine aggregate"> concrete waste recycle fine aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse%20power%20discharge" title=" pulse power discharge"> pulse power discharge</a> </p> <a href="https://publications.waset.org/abstracts/130398/moisture-impact-on-the-utilization-of-recycled-concrete-fine-aggregate-to-produce-mortar" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130398.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">155</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">502</span> Microstructural Properties of the Interfacial Transition Zone and Strength Development of Concrete Incorporating Recycled Concrete Aggregate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Boudali">S. Boudali</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Soliman"> A. M. Soliman</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Abdulsalam"> B. Abdulsalam</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Ayed"> K. Ayed</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20E.%20Kerdal"> D. E. Kerdal</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Poncet"> S. Poncet </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigates the potential of using crushed concrete as aggregates to produce green and sustainable concrete. Crushed concrete was sieved to powder fine recycled aggregate (PFRA) less than 80 µm and coarse recycled aggregates (CRA). Physical, mechanical, and microstructural properties for PFRA and CRA were evaluated. The effect of the additional rates of PFRA and CRA on strength development of recycled aggregate concrete (RAC) was investigated. Additionally, the characteristics of interfacial transition zone (ITZ) between cement paste and recycled aggregate were also examined. Results show that concrete mixtures made with 100% of CRA and 40% PFRA exhibited similar performance to that of the control mixture prepared with 100% natural aggregate (NA) and 40% natural pozzolan (NP). Moreover, concrete mixture incorporating recycled aggregate exhibited a slightly higher later compressive strength than that of the concrete with NA. This was confirmed by the very dense microstructure for concrete mixture incorporating recycled concrete aggregates compared to that of conventional concrete mixture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=compressive%20strength" title="compressive strength">compressive strength</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20concrete%20aggregates" title=" recycled concrete aggregates"> recycled concrete aggregates</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a>, <a href="https://publications.waset.org/abstracts/search?q=interfacial%20transition%20zone" title=" interfacial transition zone"> interfacial transition zone</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20fine%20recycled%20aggregate" title=" powder fine recycled aggregate"> powder fine recycled aggregate</a> </p> <a href="https://publications.waset.org/abstracts/75148/microstructural-properties-of-the-interfacial-transition-zone-and-strength-development-of-concrete-incorporating-recycled-concrete-aggregate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75148.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">342</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">501</span> Aggregate Angularity on the Permanent Deformation Zones of Hot Mix Asphalt </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lee%20P.%20Leon">Lee P. Leon</a>, <a href="https://publications.waset.org/abstracts/search?q=Raymond%20Charles"> Raymond Charles</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a method of evaluating the effect of aggregate angularity on hot mix asphalt (HMA) properties and its relationship to the Permanent Deformation resistance. The research concluded that aggregate particle angularity had a significant effect on the Permanent Deformation performance, and also that with an increase in coarse aggregate angularity there was an increase in the resistance of mixes to Permanent Deformation. A comparison between the measured data and predictive data of permanent deformation predictive models showed the limits of existing prediction models. The numerical analysis described the permanent deformation zones and concluded that angularity has an effect of the onset of these zones. Prediction of permanent deformation help road agencies and by extension economists and engineers determine the best approach for maintenance, rehabilitation, and new construction works of the road infrastructure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggregate%20angularity" title="aggregate angularity">aggregate angularity</a>, <a href="https://publications.waset.org/abstracts/search?q=asphalt%20concrete" title=" asphalt concrete"> asphalt concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=permanent%20deformation" title=" permanent deformation"> permanent deformation</a>, <a href="https://publications.waset.org/abstracts/search?q=rutting%20prediction" title=" rutting prediction "> rutting prediction </a> </p> <a href="https://publications.waset.org/abstracts/27233/aggregate-angularity-on-the-permanent-deformation-zones-of-hot-mix-asphalt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27233.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">500</span> Experimental Study on the Effect of Water-Cement Ratio and Replacement Ratio to the Capacity of the Recycled Aggregate Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Feng%20Fu">Feng Fu</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Karli"> Maria Karli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, experimental studies were carried out to investigate the behaviour of recycled aggregate concrete (RAC). A number of compressive tests, tensile splitting tests, as well as impact tests were conducted. In the tests, different recycled aggregate replacement ratio, different mix design and different water to cement ratio have been chosen in the investigation. The behavior of the RAC concrete was investigated in detail. The results of the tests show that the water-cement ratio plays an important role in the strength of the concrete and RAC concrete exhibit sufficient strength in comparison to the normal aggregate concrete; the relevant design recommendations are also made. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=recycled%20aggregate%20concrete" title="recycled aggregate concrete">recycled aggregate concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive%20test" title=" compressive test"> compressive test</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20splitting%20test" title=" tensile splitting test"> tensile splitting test</a>, <a href="https://publications.waset.org/abstracts/search?q=flexural%20strength%20test" title=" flexural strength test"> flexural strength test</a>, <a href="https://publications.waset.org/abstracts/search?q=impact%20test" title=" impact test"> impact test</a> </p> <a href="https://publications.waset.org/abstracts/71770/experimental-study-on-the-effect-of-water-cement-ratio-and-replacement-ratio-to-the-capacity-of-the-recycled-aggregate-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71770.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">389</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">499</span> Concrete Performance Evaluation of Coarse Aggregate Replacement by Civil Construction Waste</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juliane%20P.%20De%20Oliveira">Juliane P. De Oliveira</a>, <a href="https://publications.waset.org/abstracts/search?q=Carlos%20%20H.%20Dos%20Santos"> Carlos H. Dos Santos</a>, <a href="https://publications.waset.org/abstracts/search?q=Marcia%20Shoji"> Marcia Shoji</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20%20E.%20C.%20Ferreira"> Maria E. C. Ferreira</a>, <a href="https://publications.waset.org/abstracts/search?q=Natalia%20U.%20Yamaguchi"> Natalia U. Yamaguchi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The construction sector is considered a major generator of environmental impacts due to the high consumption of natural resources and waste generation. Thus, this article aims to evaluate the performance of a concrete produced by the partial and total replacement of natural coarse aggregate by recycled coarse aggregate, derived from the concrete residue of buildings and demolitions. The study was made by comparing the compressive strength and absorption of three different concrete traces, keeping the water/cement factor of 0.60 and changing only the proportions of recycled coarse aggregate between 0%, 50% and 100%. Traces 50% and 100% obtained good results by comparing the actual specific mass, because the material used is lighter to the natural coarse aggregate. It was concluded that the concrete produced with recycled aggregates, even with inferior results, can be used where it is not needed a structural function, giving an adequate destination to the construction and demolition waste and consequently reducing the extraction and consumption of natural resources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=green%20concrete" title="green concrete">green concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20aggregate" title=" recycled aggregate"> recycled aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=recycling" title=" recycling"> recycling</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20development" title=" sustainable development"> sustainable development</a> </p> <a href="https://publications.waset.org/abstracts/124072/concrete-performance-evaluation-of-coarse-aggregate-replacement-by-civil-construction-waste" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124072.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">152</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">498</span> Impact of Locally Available Recycled Concrete Aggregate on Concrete’s Mechanical and Durability Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Robert%20Bu%C5%A1i%C4%87">Robert Bušić</a>, <a href="https://publications.waset.org/abstracts/search?q=Ivana%20Mili%C4%8Devi%C4%87"> Ivana Miličević</a>, <a href="https://publications.waset.org/abstracts/search?q=Larisa%20%C5%A0arga%C4%8D"> Larisa Šargač</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The construction industry generates a large amount of waste, which poses a challenge for disposal and often requires significant areas for landfill. Therefore, recycling construction waste has become imperative. This study focuses on investigating the use of locally available recycled concrete as a substitute for traditional aggregates and analyzing the impact of this change on the mechanical and durability properties of concrete. The research begins with the crushing of locally available waste concrete, followed by sieving and sorting the aggregate into different fractions. Four concrete mix designs were created, with one serving as a reference mixture without recycled aggregate, while the remaining three mixes included recycled aggregate in varying proportions. The experimental part includes testing the key properties of concrete in both fresh and hardened states, including slump and flow tests, compressive strength, static modulus of elasticity, and shrinkage of the concrete, with the aim of assessing the impact of locally available recycled aggregate on concrete properties. By using experimental testing methods, the results were compared with conventional concrete, providing deeper insights into the potential advantages and disadvantages of using locally available recycled concrete in various construction projects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete" title="concrete">concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=durability" title=" durability"> durability</a>, <a href="https://publications.waset.org/abstracts/search?q=recycled%20aggregate" title=" recycled aggregate"> recycled aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability" title=" sustainability"> sustainability</a> </p> <a href="https://publications.waset.org/abstracts/194656/impact-of-locally-available-recycled-concrete-aggregate-on-concretes-mechanical-and-durability-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/194656.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">8</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">497</span> Improvement of Recycled Aggregate Concrete Properties by Controlling the Water Flow in the Interfacial Transition Zone</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Eckert">M. Eckert</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Oliveira"> M. Oliveira</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Bettencourt%20Ribeiro"> A. Bettencourt Ribeiro </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The intensive use of natural aggregate, near the towns, associated to the increase of the global population, leads to its depletion and increases the transport distances. The uncontrolled deposition of construction and demolition waste in landfills and city outskirts, causes pollution and take up space for noblest purposes. The main problem of recycled aggregate lies in its high water absorption, what is due to the porosity of the materials which constitute this type of aggregate. When the aggregates are dry, water flows from the inside to the engaging cement paste matrix, and when they are saturated an inverse process occurs. This water flow breaks the aggregate-cement paste bonds and the greater water concentration, in the inter-facial transition zone, degrades the concrete properties in its fresh and hardened state. Based on the water absorption over time, it was optimized an staged mixing method, to regulate the said flow and manufacture recycled aggregate concrete with levels of work-ability, strength and shrinkage equivalent to those of conventional concrete.The physical, mechanical and geometrical properties of the aggregates where related to the properties of concrete in its fresh and hardened state. Three types of commercial recycled aggregates and two types of natural aggregates where evaluated. Six compositions with different percentages of recycled coarse aggregate where tested. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=recycled%20aggregate" title="recycled aggregate">recycled aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20absorption" title=" water absorption"> water absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=interfacial%20transition%20zone" title=" interfacial transition zone"> interfacial transition zone</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive-strength" title=" compressive-strength"> compressive-strength</a>, <a href="https://publications.waset.org/abstracts/search?q=shrinkage" title=" shrinkage"> shrinkage</a> </p> <a href="https://publications.waset.org/abstracts/23004/improvement-of-recycled-aggregate-concrete-properties-by-controlling-the-water-flow-in-the-interfacial-transition-zone" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23004.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">450</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">496</span> An Investigation on Fresh and Hardened Properties of Concrete While Using Polyethylene Terephthalate (PET) as Aggregate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Md.%20Jahidul%20Islam">Md. Jahidul Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20K.%20M.%20Rakinul%20Islam"> A. K. M. Rakinul Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Salamah%20Meherier"> M. Salamah Meherier</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigates the suitability of using plastic, such as polyethylene terephthalate (PET), as a partial replacement of natural coarse and fine aggregates (for example, brick chips and natural sand) to produce lightweight concrete for load bearing structural members. The plastic coarse aggregate (PCA) and plastic fine aggregate (PFA) were produced from melted polyethylene terephthalate (PET) bottles. Tests were conducted using three different water–cement (w/c) ratios, such as 0.42, 0.48, and 0.57, where PCA and PFA were used as 50% replacement of coarse and fine aggregate respectively. Fresh and hardened properties of concrete have been compared for natural aggregate concrete (NAC), PCA concrete (PCC) and PFA concrete (PFC). The compressive strength of concrete at 28 days varied with the water–cement ratio for both the PCC and PFC. Between PCC and PFC, PFA concrete showed the highest compressive strength (23.7 MPa) at 0.42 w/c ratio and also the lowest compressive strength (13.7 MPa) at 0.57 w/c ratio. Significant reduction in concrete density was mostly observed for PCC samples, ranging between 1977–1924 kg/m³. With the increase in water–cement ratio PCC achieved higher workability compare to both NAC and PFC. It was found that both the PCA and PFA contained concrete achieved the required compressive strength to be used for structural purpose as partial replacement of the natural aggregate; but to obtain the desired lower density as lightweight concrete the PCA is most suited. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polyethylene%20terephthalate" title="polyethylene terephthalate">polyethylene terephthalate</a>, <a href="https://publications.waset.org/abstracts/search?q=plastic%20aggregate" title=" plastic aggregate"> plastic aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=concrete" title=" concrete"> concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=fresh%20and%20hardened%20properties" title=" fresh and hardened properties"> fresh and hardened properties</a> </p> <a href="https://publications.waset.org/abstracts/26288/an-investigation-on-fresh-and-hardened-properties-of-concrete-while-using-polyethylene-terephthalate-pet-as-aggregate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26288.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">440</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">495</span> Durability of Lightweight Concrete Material Made from Date Palma Seeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Almograbi">Mohammed Almograbi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Libya is one of the largest producers of dates from date palm, generating about 60000 tonnes of date palm seeds (DPS) annually. This large amount of seeds led to studies into the possible use as aggregates in lightweight concrete for some special structures. The utilization of DPS as aggregate in concrete provides a good solution as alternative aggregate to the stone aggregate. It has been recognized that, DPS can be used as coarse aggregate in structural lightweight concrete industry. For any structure member, the durability is one of the most important considerations during its service life. This paper presents the durability properties of DPS concrete. These include the water permeability, water absorption, sorptivity and chloride penetration. The test results obtained were comparable to the conventional lightweight concrete. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=date%20palm%20seeds" title="date palm seeds">date palm seeds</a>, <a href="https://publications.waset.org/abstracts/search?q=lightweight%20concrete" title=" lightweight concrete"> lightweight concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=durability" title=" durability"> durability</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability" title=" sustainability"> sustainability</a>, <a href="https://publications.waset.org/abstracts/search?q=permeability%20of%20concrete" title=" permeability of concrete"> permeability of concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20absorption%20of%20concrete" title=" water absorption of concrete"> water absorption of concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=sorptivity%20of%20concrete" title=" sorptivity of concrete"> sorptivity of concrete</a> </p> <a href="https://publications.waset.org/abstracts/21909/durability-of-lightweight-concrete-material-made-from-date-palma-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21909.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">655</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">494</span> Using Waste Marbles in Self Compacting Lightweight Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Z.%20Funda%20T%C3%BCrkmeno%C4%9Flu">Z. Funda Türkmenoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehmet%20T%C3%BCrkmenoglu"> Mehmet Türkmenoglu</a>, <a href="https://publications.waset.org/abstracts/search?q=Demet%20Yavuz"> Demet Yavuz</a>, <a href="https://publications.waset.org/abstracts/search?q="> </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the effects of waste marbles as aggregate material on workability and hardened concrete characteristics of self compacting lightweight concrete are investigated. For this purpose, self compacting light weight concrete are produced by waste marble aggregates are replaced with fine aggregate at 5%, 7.5%, and 10% ratios. Fresh concrete properties, slump flow, T<sub>50</sub> time, V funnel, compressive strength and ultrasonic pulse velocity of self compacting lightweight concrete are determined. It is concluded from the test results that using waste marbles as aggregate material by replacement with fine aggregate slightly affects fresh and hardened concrete characteristics of self compacting lightweight concretes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hardened%20concrete%20characteristics" title="hardened concrete characteristics">hardened concrete characteristics</a>, <a href="https://publications.waset.org/abstracts/search?q=self%20compacting%20lightweight%20concrete" title=" self compacting lightweight concrete"> self compacting lightweight concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20marble" title=" waste marble"> waste marble</a>, <a href="https://publications.waset.org/abstracts/search?q=workability" title=" workability"> workability</a> </p> <a href="https://publications.waset.org/abstracts/61141/using-waste-marbles-in-self-compacting-lightweight-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61141.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">346</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">493</span> Making Lightweight Concrete with Meerschaum</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Gonen">H. Gonen</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Dogan"> M. Dogan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Meerschaum, which is found in the earth’s crust, is a white and clay like hydrous magnesium silicate. It has a wide area of use from production of carious ornaments to chemical industry. It has a white and irregular crystalline structure. It is wet and moist when extracted, which is a good form for processing. At drying phase, it gradually loses its moisture and becomes lighter and harder. In through-dry state, meerschaum is durable and floats on the water. After processing of meerschaum, A ratio between %15 to %40 of the amount becomes waste. This waste is usually kept in a dry-atmosphere which is isolated from environmental effects so that to be used right away when needed. In this study, use of meerschaum waste as aggregate in lightweight concrete is studied. Stress-strain diagrams for concrete with meerschaum aggregate are obtained. Then, stress-strain diagrams of lightweight concrete and concrete with regular aggregate are compared. It is concluded that meerschaum waste can be used in production of lightweight concrete. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lightweight%20concrete" title="lightweight concrete">lightweight concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=meerschaum" title=" meerschaum"> meerschaum</a>, <a href="https://publications.waset.org/abstracts/search?q=aggregate" title=" aggregate"> aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=sepiolite" title=" sepiolite"> sepiolite</a>, <a href="https://publications.waset.org/abstracts/search?q=stress-strain%20diagram" title=" stress-strain diagram"> stress-strain diagram</a> </p> <a href="https://publications.waset.org/abstracts/18253/making-lightweight-concrete-with-meerschaum" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18253.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">604</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">492</span> Ceramic Ware Waste Potential as Co-Ballast in Dense Masonry Unit Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20A.%20Ajayi-Banji">A. A. Ajayi-Banji</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Adegbile"> M. A. Adegbile</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20D.%20Akpenpuun"> T. D. Akpenpuun</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Bello"> J. Bello</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20Omobowale"> O. Omobowale</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20A.%20Jenyo"> D. A. Jenyo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ceramic ware waste applicability as coarse aggregate was considered in this study for dense masonry unit production. The waste was crushed into 1.4 mm particle size and mixed with natural fine aggregate in the ratio 2:3. Portland ordinary cement, aggregate, and water mix ratio was 1:7:0.5. Masonry units produced were cured for 7, 21 and 28 days prior to compressive test. The result shows that curing age have a significant effect on all the compressive strength indices inspected except for Young’s modulus. Crushing force and the compressive strength of the ceramic-natural fine aggregate blocks increased by 11.7 – 54.7% and 11.6 – 59.2% respectively. The highest ceramic-natural fine block compressive strength at yield and peak, 4.97 MPa, was obtained after 21 days curing age. Ceramic aggregate introduced into the dense blocks improved the suitability of the blocks for construction purposes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ceramic%20ware%20waste" title="ceramic ware waste">ceramic ware waste</a>, <a href="https://publications.waset.org/abstracts/search?q=co-ballast" title=" co-ballast"> co-ballast</a>, <a href="https://publications.waset.org/abstracts/search?q=dense%20masonry%20unit" title=" dense masonry unit"> dense masonry unit</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive%20strength" title=" compressive strength"> compressive strength</a>, <a href="https://publications.waset.org/abstracts/search?q=curing%20time" title=" curing time"> curing time</a> </p> <a href="https://publications.waset.org/abstracts/82381/ceramic-ware-waste-potential-as-co-ballast-in-dense-masonry-unit-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82381.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">410</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">491</span> Risk of Plastic Shrinkage Cracking in Recycled Aggregate Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Eckert">M. Eckert</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Oliveira"> M. Oliveira</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The intensive use of natural aggregates, near cities and towns, associated to the increase of the global population, leads to its depletion and increases the transport distances. The uncontrolled deposition of construction and demolition waste in landfills and city outskirts, causes pollution and takes up space. The use of recycled aggregates in concrete preparation would contribute to mitigate the problem. However, it arises the problem that the high water absorption of recycled aggregate decreases the bleeding rate of concrete, and when this gets lower than the evaporation rate, plastic shrinkage cracking occurs. This phenomenon can be particularly problematic in hot and windy curing environments. Cracking facilitates the flow of liquid and gas into concrete which attacks the reinforcement and degrades the concrete. These factors reduce the durability of concrete structures and consequently the lifetime of buildings. A ring test was used, cured in a wind tunnel, to evaluate the plastic shrinkage cracking sensitivity of recycled aggregate concrete, in order to implement preventive means to control this phenomenon. The role of several aggregate properties on the concrete segregation and cracking mechanisms were also discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=recycled%20aggregate" title="recycled aggregate">recycled aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=plastic%20shrinkage%20cracking" title=" plastic shrinkage cracking"> plastic shrinkage cracking</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20tunnel" title=" wind tunnel"> wind tunnel</a>, <a href="https://publications.waset.org/abstracts/search?q=durability" title=" durability"> durability</a> </p> <a href="https://publications.waset.org/abstracts/24303/risk-of-plastic-shrinkage-cracking-in-recycled-aggregate-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24303.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">421</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">490</span> Experimental Study on Recycled Aggregate Pervious Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ji%20Wenzhan">Ji Wenzhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhang%20Tao"> Zhang Tao</a>, <a href="https://publications.waset.org/abstracts/search?q=Li%20Guoyou"> Li Guoyou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Concrete is the most widely used building material in the world. At the same time, the world produces a large amount of construction waste each year. Waste concrete is processed and treated, and the recycled aggregate is used to make pervious concrete, which enables the construction waste to be recycled. Pervious concrete has many advantages such as permeability to water, protection of water resources, and so on. This paper tests the recycled aggregate obtained by crushing high-strength waste concrete (TOU) and low-strength waste concrete (PU), and analyzes the effect of porosity, amount of cement, mineral admixture and recycled aggregate on the strength of permeable concrete. The porosity is inversely proportional to the strength, and the amount of cement used is proportional to the strength. The mineral admixture can effectively improve the workability of the mixture. The quality of recycled aggregates had a significant effect on strength. Compared with concrete using "PU" aggregates, the strength of 7d and 28d concrete using "TOU" aggregates increased by 69.0% and 73.3%, respectively. Therefore, the quality of recycled aggregates should be strictly controlled during production, and the mix ratio should be designed according to different use environments and usage requirements. This test prepared a recycled aggregate permeable concrete with a compressive strength of 35.8 MPa, which can be used for light load roads and provides a reference for engineering applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=recycled%20aggregate" title="recycled aggregate">recycled aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=permeable%20concrete" title=" permeable concrete"> permeable concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=compressive%20strength" title=" compressive strength"> compressive strength</a>, <a href="https://publications.waset.org/abstracts/search?q=permeability" title=" permeability"> permeability</a> </p> <a href="https://publications.waset.org/abstracts/85903/experimental-study-on-recycled-aggregate-pervious-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85903.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">224</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">489</span> Investigation the Effect of Partial Replacement of Fine Aggregates with Ceramic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yared%20Assefa%20Demessie">Yared Assefa Demessie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study may help to establish the appropriateness of ceramic waste aggregate for concrete production since it is obviously understood that the rising from continuous urbanization and industrialization development leads depletion of natural construction resource and the disposal of waste material. It can be used as base to conduct a study on the alternative readily available materials like ceramic industrial waste aggregates can lead to environmental concrete. The study assessed the fresh and hardened properties of the concrete produced by replacing part of the natural fine aggregate with an aggregate produced from ceramic industrial waste. In the study, experimental investigation was employed which involved two major tasks: material specifications and experimental evaluation of concrete were done in the laboratory. Experimental investigations such that workability, unit weight, compressive strength test, tensile strength test and flexural strength test for C-25 concrete mixes with different percentages of ceramic industrial waste aggregate after a curing period of 7 and 28 days has done and interpreted the result statically using mean, standard deviation and coefficient of variance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ceramic%20industrial%20waste" title="ceramic industrial waste">ceramic industrial waste</a>, <a href="https://publications.waset.org/abstracts/search?q=fresh%20concrete" title=" fresh concrete"> fresh concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=hardened%20concrete" title=" hardened concrete"> hardened concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=fine%20aggregate" title=" fine aggregate"> fine aggregate</a> </p> <a href="https://publications.waset.org/abstracts/183198/investigation-the-effect-of-partial-replacement-of-fine-aggregates-with-ceramic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183198.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">66</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=aggregate%20crashed%20value&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=aggregate%20crashed%20value&page=3">3</a></li> <li class="page-item"><a class="page-link" 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