电阻率法研究粉煤灰基地聚合物的凝结硬化  

Research on the Setting and Hardening Process of Fly Ash Based Geopolymer Using Electrical Resisivity Method

作　　者：张云升[1] 贾艳涛[2] 李宗津[3] 权基琢鋆[1] 

机构地区：[1]东南大学江苏省土木工程材料重点实验室,南京211189 [2]河海大学材料学院,南京210098 [3]香港科技大学土木工程系,香港九龙清水湾

出　　处：《武汉理工大学学报》2009年第7期111-114,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50878043);教育部新世纪优秀人才计划;东南大学优秀青年教师教学科研资助计划;江苏省青蓝项目

摘　　要：采用无电极电阻率测量仪自动连续监测了分别掺加0、10%、30%、50%、70%粉煤灰的地聚合物浆体凝结硬化全过程中的电阻率变化,分析了粉煤灰基地聚合物浆体随时间发展的物理化学变化规律,探讨了偏高岭土和粉煤灰与碱激发剂之间的反应机理,并将地聚合化反应过程分成:离子释出、离子重构、凝结硬化及稳定4个特征阶段。最后还提出了地聚合化反应过程模型。The electrical resistivity changes with time of various geopolymeric pastes with 0, 10 %, 30 %, 50 % and 70 % fly ash are continuously monitoring by using electrodeless resistivity apparatus. The physicochemical process occurred during geopolymerization process is also analysized. According to the characteristics of the resistivity evolution curves, the four stages were well defined： ion release, ion reorientation, setting and hardening, stabilization. Finally, a descriptive microstructural evolution model is proposed.

关 键 词：地聚合物 粉煤灰 凝结硬化 电阻率 

分 类 号：TU528[建筑科学—建筑技术科学]