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黄继城:大掺量冶炼渣在道路水泥稳定层中的应用-百年建筑网
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article-text_1"> <div data-val="3031" id="article-content"> <div id="text"> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="//img02.mysteelcdn.com/wz/uploaded/steel/2024/04/26/15e9b5a4fc5b495f940261312521d6ca.png" alt="" width="600" height="136.72131147540983" /></p> <p>2024年4月26日,福建省<a href='https://m.100njz.com/market/p-968-----1006-0--------1.html' target='_blank' style='color:#3861ab'>砂石</a>协会第五届二次理事会暨2024年福建省<a href='https://m.100njz.com/' target='_blank' style='color:#3861ab'>建筑材料</a>产业链大会由福建省砂石协会、福建省土木建筑学会、百年建筑网、<a href='https://m.mysteel.com/' target='_blank' style='color:#3861ab'>我的钢铁网</a>、北京市盈科(福州)律师事务所联合主办,会议于4月26日下午13:00开始在福州泰禾铂尔曼酒店(福建省福州市晋安区岳峰镇洋头尾路3号泰禾广场F1 )召开。</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="//img08.mysteelcdn.com/wz/uploaded/steel/2024/04/26/2115256eaca34f278bdbfa9658cddd21.png" alt="" width="600" height="396.75" /></p> <p>会上,福建省建筑科学研究院固废处理研究室的主任工程师黄继城对大掺量冶炼渣在道路<a href='https://m.100njz.com/market/p-968-----1001-0--------1.html' target='_blank' style='color:#3861ab'>水泥</a>稳定层中的应用发表主旨演讲。主要分成五个部分:一般工业固废综合利用现状、冶炼渣路用性能分析、大掺量冶炼渣在道路水泥稳定层中的应用、工程案例、固废处理技术研发中心简介。</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="//img08.mysteelcdn.com/wz/uploaded/steel/2024/04/26/bdc9e0d4de274c7c823ed25374ea2faf.jpg" alt="" width="600" height="400.125" /></p> <p style="text-align: center;"><strong>福建省建筑科学研究院固废处理研究室的主任工程师黄继城 </strong></p> <p>黄继城表述目前钢渣和天然骨料在长期稳定性方面存在差异,天然骨料在不同自然条件下均能稳定存在,具有良好耐久性和化学性能,然而因钢渣是在极短时间内迅速冷却产生的,因此其稳定性不如天然骨料强。要实现钢渣的长期、安全、环保的资源化利用,解决其稳定性问题是关键所在。</p> <p>通过以未陈化的钢渣为参照组,对预处理后的钢渣稳定性分析的对比试验黄继城得出结论:钢渣中存在的f-CaO、f-MgO等有害物质,在使用过程中崩解水化后容易产生大体积膨胀,对结构整体性有害,因此要将钢渣作为道路材料应采取有效的预处理措施。</p> <p>此外,配合比设计应选用骨架密实型级配,基层的集料级配类型有骨架密实性和悬浮密实型两种,由于骨架密实型级配能形成骨架嵌挤作用,在强度形成方面较好,且能为钢渣的微膨胀预留一定的空间。</p> <p>最后,黄继城表示在试验段工程中会出现钢渣含灰量、含泥量大,规格变异性大,棱角性不好,钢渣热料产量低,生产配合比变化等问题,因此需要采取缩短陈化期、钢渣及时利用,维护筛网,采用反击式破碎机替代颚式破碎机,清洁化生产提高钢渣洁净度,优化钢渣替代比例、做好配合比验证等解决方案来应对出现的问题。</p> 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