超细碳酸钙对硫铝酸盐水泥基双液注浆材料性能的影响  

Effect of Superfine CaCO_(3) on Properties of Sulphoaluminate Cement-Based Double Fluid Grouting Material

作　　者：王燕峰 刘松辉 韩康 张莉 管学茂[1] WANG Yanfeng;LIU Songhui;HAN Kang;ZHANG Li;GUAN Xuemao(Henan Key Laboratory of Materials on Deep-Earth Engineering,School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China)

机构地区：[1]河南理工大学材料科学与工程学院,河南深地材料科学与技术重点实验室,焦作454003

出　　处：《硅酸盐通报》2021年第2期368-376,共9页Bulletin of the Chinese Ceramic Society

基　　金：国家重点研发计划(2017YFC0603004);国家自然科学基金(U1604118,U1905216)。

摘　　要：为了进一步改善硫铝酸盐水泥基双液注浆材料(SCGM)的力学性能和抗碳化性能,采用气-液碳化法合成了超细碳酸钙(SC),研究了SC掺量对SCGM凝结时间、水化硬化性能、抗碳化性能及微观结构的影响规律。结果表明:SC可以促进SCGM的水化,提高力学性能及抗碳化性能;当SC掺量为3%(质量分数)时,养护6 h和28 d的抗压强度分别提升29.40%和26.43%,碳化5 d后,碳化深度降低了24.12%,碳化7 d后,碳化收缩降低了19.05%。该研究结果为进一步提升SCGM的力学性能和抗碳化性能提供了新方法。In order to further improve the mechanical properties and carbonation resistance performance of sulphoaluminate cement-based double fluid grouting material(SCGM),superfine calcium carbonate(SC)was synthesized by gas-liquid carbonation method,and the effect of SC content on the setting time,hydration and hardening performance,carbonation resistance performance and microstructure of SCGM was studied.The results show that SC promotes the hydration of SCGM,improves mechanical strength and carbonation resistance performance.When the SC mass fraction is 3%,the compressive strength of 6 h and 28 d increases by 29.40%and 26.43%,respectively.After 5 d of carbonation,the depth of carbonation was reduced by 24.12%,and after 7 d of carbonation,the carbonation shrinkage was reduced by 19.05%.The research results provide a new method for improving the mechanical properties and the carbonation resistance performance of SCGM.

关 键 词：超细碳酸钙 硫铝酸盐水泥 注浆材料 力学性能 抗碳化性能 

分 类 号：TQ172[化学工程—水泥工业]