煤矸石混凝土性能研究现状  

Research on Performance of Coal Gangue Concrete

作　　者：王稷良[1,2] 马文辉 徐伟东 吕志刚 WANG Jiliang;MA Wenhui;XU Weidong;LYU Zhigang(School of Civil Engineering,Hebei University of Engineering,Handan,Hebei 056038,China;Research Institute of Highway,Ministry of Transport,Beijing 100088,China;Inner Mongolia Leishi Environmental Technology Co.,Ltd.,Wuhai,Inner Mongolia 016040,China;Inner Mongolia Academy of Comprehensive Transportation Sciences Co.,Ltd.,Hohhot,Inner Mongolia 010051,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]交通运输部公路科学研究院,北京市100088 [3]内蒙古雷石环保科技有限公司,内蒙古乌海016040 [4]内蒙古综合交通科学研究院有限责任公司,内蒙古呼和浩特010051

出　　处：《中外公路》2024年第4期104-114,共11页Journal of China & Foreign Highway

基　　金：内蒙古自治区交通运输科技项目(编号:NJ-2022-13,NJ-2020-28)。

摘　　要：煤矸石是在原煤开采过程中产生的一种工业固体废弃物,其堆存量大,利用率相对较低。若将煤矸石用作混凝土骨料,不仅能有效解决煤矸石堆存造成的环境污染,还能缓解天然砂石资源短缺的问题,为煤矸石的大规模利用开辟一条有效途径。该文针对煤矸石作为混凝土骨料的应用特性,系统分析了煤矸石化学成分、矿物组成以及物理特性,概述了国内外关于煤矸石作为骨料对混凝土的工作性能、力学性能、体积稳定性以及耐久性的影响规律,并展望了煤矸石在混凝土骨料应用中的发展趋势,以期为煤矸石在混凝土中的大规模推广利用提供参考。Coal gangue is an industrial solid waste produced in the process of raw coal mining.It has a large stock and a relatively low utilization rate.Using coal gangue as concrete aggregate can not only solve the environmental pollution caused by coal gangue storage but also make up for the shortage of natural sand and gravel resources,which opens up an effective way for the large-scale utilization of coal gangue.According to the application characteristics of coal gangue as concrete aggregate,the chemical component,mineral composition,and physical properties of coal gangue were systematically analyzed.The influence of coal gangue as aggregate on the working performance,mechanical properties,volume stability,and durability of concrete in China and abroad was summarized.The development trend of coal gangue used as concrete aggregate was prospected,so as to provide a reference for the large-scale popularization and utilization of coal gangue in concrete.

关 键 词：煤矸石 骨料 压碎值 吸水率 混凝土 

分 类 号：U414[交通运输工程—道路与铁道工程]