固废基注浆材料的性能与硬化机理研究  

Properties and Hardening Mechanism of Solid Waste Based Grouting Materials

作　　者：任才富 王栋民[1] 房奎圳 王吉祥 张信龙 陈伟[4] REN Caifu;WANG Dongmin;FANG Kuizhen;WANG Jixiang;ZHANG Xinlong;CHEN Wei(School of Chemical and Environmental Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;School of Civil Engineering,Tsinghua University,Beijing 100084,China;CSCEC Northeast Design and Research Institute Co.,Ltd.,Shenyang 110000,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]清华大学土木工程系,北京100084 [3]中国建筑东北设计研究院有限公司,沈阳110000 [4]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《硅酸盐通报》2025年第4期1328-1336,共9页Bulletin of the Chinese Ceramic Society

基　　金：国家重点研发计划(2019YFC19072);中央高校基本科研业务费(中国矿业大学(北京)博士研究生拔尖创新人才培育基金)(BBJ2024056)。

摘　　要：本文以钢渣、矿渣和脱硫石膏为原料开发了一种低碳、低成本的固废基注浆材料,系统研究了固废基注浆材料的工作性能、力学性能和抗渗性能,通过XRD、SEM和MIP等微观测试手段分析了其硬化机理,并与水泥基注浆材料进行了对比。结果表明,与水泥相比,固废基胶凝材料提高了注浆材料的工作性能和结石率,富水环境下显著降低了注浆材料的泌水率,但使凝结时间大幅延长。固废基注浆材料的早期强度偏低,后期强度大幅提升,两者均高于堵水用注浆材料28 d强度2.5 MPa的要求。固废基注浆材料水化生成了更多的水化产物钙矾石(AFt)和水化硅酸钙(C-S-H)凝胶,二者相互穿插、搭接,填充了内部孔隙,微观结构更加致密,凝胶孔含量增加,孔隙率降低,从而使抗渗性能和力学性能大幅提升。In this paper,a low carbon and low cost solid waste based grouting material was developed using steel slag,slag and desulfurization gypsum.The workability,mechanical properties and impermeability of the solid waste based grouting materials were systematically studied.The hardening mechanism was analyzed by XRD,SEM and MIP,and compared with cement based grouting materials.The results show that compared with cement,the solid waste based cementitious materials can improve the workability and stone rate of the grouting material,reduce the bleeding rate significantly in water-rich environment,but the setting time is greatly extended.The early strength of solid waste based grouting materials is low,and the late strength is greatly increased,which exceeds the requirement of 2.5 MPa for 28 d strength of grouting materials used for water plugging.More hydration products ettringite(AFt)and hydrated calcium silicate(C-S-H)gels are generated from the hydration of solid waste based grouting materials,which interpenetrate and overlap with each other,fill the internal pores,make the microstructure more dense,increase the content of gel pores,and decrease the porosity,thus greatly improving the impermeability and mechanical properties.

关 键 词：固废基胶凝材料 注浆材料 力学性能 微观结构 硬化机理 

分 类 号：TU528[建筑科学—建筑技术科学]