改性低碱性水泥基注浆材料性能研究  

Study on the Performance of Modified Low Alkali Cementitious Grouting Materials

作　　者：于通 张佳兴[1] 周立宏 裴向军[1] 袁锐 薛晓峰 章爱卫 YU Tong;ZHANG Jiaxing;ZHOU Lihong;PEI Xiangjun;YUAN Rui;XUE Xiaofeng;ZHANG Aiwei(State Key Laboratory of Geological Hazard Prevention and Geological Environmental Protection,Chengdu University of Technology,Chengdu 610059,China;North China Engineering Investigation Institute Limited Company,Shijiazhuang 050021 China;Technology Innovation Center for Groundwater Disaster Prevention and Control Engineering for Metal Mines,Ministry of Natural Resources,Shijiazhuang 050021,China)

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]华北有色工程勘察院有限公司,石家庄050021 [3]自然资源部金属矿山地下水灾害防治工程技术创新中心,石家庄050021

出　　处：《长春工程学院学报(自然科学版)》2025年第1期12-18,共7页Journal of Changchun Institute of Technology:Natural Sciences Edition

基　　金：国家自然科学基金(42207231);四川省自然科学基金(2025ZNSFSC1189)。

摘　　要：针对矿山帷幕注浆中面临的水泥浆液凝结时间长、易分散和矿山排水pH过高的问题,从水泥降碱方法出发,以普通硅酸盐水泥为基础,通过添加化学外加剂硫酸铝、聚合氯化铝和木质素磺酸钠,研发一种改性低碱性水泥基注浆材料。通过单因素试验方法,开展化学外加剂对浆液pH、浆液流变性能、浆液凝结性能及结石体抗压强度的影响规律的研究,同时结合SEM与XRD,分析化学外加剂对水泥浆液的降碱机理。结果表明:3种化学外加剂对于水化产物均有影响,能够调节水化产物的形貌、反应速度和生成量,从而实现对宏观性能的改变。In view of the problems of long setting time,easy dispersion of cement slurry and high pH value of mine drainage faced in curtain grouting in mines,starting from the method of reducing alkali in cement,a modified low-alkaline cement-based grouting material is developed based on ordinary portland cement by adding chemical additives such as aluminum sulfate,polyaluminum chloride and sodium lignosulfonate.The influence of chemical additives on pH value,rheological properties,coagulability and compressive strength of cement slurry is studied through single factor experiment method.SEM and XRD are used to analyze the alkali reduction mechanism of chemical additives on cement slurry.The results are indicated that all three chemical additives have an impact on the hydration products,and can adjust the morphology,reaction rate,and generation amount of hydration products,thereby achieving changes in macroscopic properties.

关 键 词：帷幕注浆 水泥基浆液 降碱 化学外加剂 PH 

分 类 号：TU528.062[建筑科学—建筑技术科学]