酸环境下纳米改性水泥基注浆材料耐蚀研究  

Research on erosion resistance of nano-modified cement-basedgrouting materials in acid environment

作　　者：韩国庆 王晓健[1] 马昌龙 HAN Guoqing;WANG Xiaojian;MA Changlong(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《建井技术》2024年第5期57-61,共5页Mine Construction Technology

基　　金：国家自然科学基金项目(51874005)。

摘　　要：研究了单掺纳米SiO_(2)、单掺纳米偏高岭土和复掺纳米SiO_(2)/纳米偏高岭土注浆材料抗酸侵蚀性能的影响。测试了不同龄期下不同试样体系的质量损失率和耐蚀系数,以及通过XRD和SEM微观实验分析探究了其作用机理。结果表明:引入适量纳米SiO_(2)的水泥浆体的耐硫酸侵蚀能力稍优于掺入纳米偏高岭土的水泥体系,且复掺体系的效果优于单掺。在水泥浆体系内引入纳米材料可有助于提升其工程应用性能,有效改善水泥基注浆材料的力学性能、耐久性及抗蚀性。The effects of single doped nano-silica,single doped nano-metakaolin and compound doped nano-silica/nano-metakaolin on the acid erosion resistance of cement-based grouting materials were studied.The mass loss rate and corrosion resistance coefficient of different sample systems at different ages were tested,and the mechanism of action was investigated by XRD and SEM.The results show that the sulfuric acid corrosion resistance of the cement slurry with proper amount of nano-silica is slightly better than that of the cement system with nano-metakaolin,and the effect of the compound system is better than that of the single one.The introduction of nanomaterials into the cement slurry system can help to improve its engineering application performance,and effectively improve the mechanical properties,durability and corrosion resistance of cement-based grouting materials.

关 键 词：注浆 纳米SiO_(2) 纳米偏高岭土 水泥基材料 酸侵蚀 

分 类 号：TU528[建筑科学—建筑技术科学]