粉煤灰-CaO胶凝尾矿免烧建筑材料的显微形貌特征及反应机理研究  

The Studies on Microphotograph Characters and Reaction Mechanism of Non-Sintering Fly Ash-CaO Cement Tailing Building Materials

作　　者：李建平[1] 倪文[1] 陈德平[1] 汪坤[1] 

机构地区：[1]北京科技大学土木与环境工程学院,100083

出　　处：《地质论评》2003年第2期201-204,T007,T008,共6页Geological Review

基　　金：教育部"高等学校骨干教师资助计划"(编号GG-430-10008-1001);"高等学校优秀青年教师教学科研奖励计划"资助项目

摘　　要：本文利用粉煤灰-CaO无熟料粉煤灰水泥作为生产尾矿免烧建筑制品的胶凝材料,采用常压湿热养护技术,实验研究了粉煤灰-CaO胶凝体系和粉煤灰-CaO-尾矿蒸养体系,运用SEM研究手段,对不同工艺条件下粉煤灰水泥及尾矿建筑材料的显微形貌特征进行了研究,并对蒸养过程中的反应机理进行了探讨。Two types of cementitious material of common Portland and lime cement have mainly been used in producing non-sintering tailing building brick in our country now, and the technological condition must be steam-pressure maintaining at the temperature higher than 150℃. Fly ash cementitious material has been used in this paper. By using of normal pressure steam-maintaining technique, we have studied the fly ash-CaO cement system and fly ash-CaO-tailing steam-maintaining system. Meanwhile we also have studied the microphotograph characters in different technological conditions by using of scanning electron microscope (SEM), and discussed the reaction mechanism of non-sintering fly ash-CaO cement tailing building materials during steam-maintaining process.

关 键 词：建筑材料 粉煤灰水泥 尾矿 显微形貌 反应机理 粉煤灰CaO凝胶体系 

分 类 号：TD98[矿业工程—选矿]