热激活煤矸石的火山灰活性试验研究  

作　　者：董刚[1] 王培铭[1] 冯奇[1] 

机构地区：[1]同济大学,上海200092

出　　处：《新型建筑材料》2004年第10期9-11,共3页New Building Materials

基　　金：国家重点基础研究规划项目(2001CB610704);上海市重点学科建设项目

摘　　要：煤矸石的活性较低,通过煅烧可以使煤矸石的活性得到较大程度的提高。比较了不同煅烧温度与不同煅烧方式的煤矸石水泥的胶砂强度,用SEM及XRD分析了活化煤矸石的形貌及晶格转变,试验表明煅烧能够提高煤矸石的火山灰活性,经600～800℃煅烧煤矸石的活性较高;煤矸石煅烧后产生的偏高岭石是煤矸石活性的主要来源。The activity of gangue is very low that can be greatly increased by calcination. Comparisons are made on cementing strength of gangue cement under different calcination temperatures and with different calcination methods. SEM and XRD are made to analyze the appearance and lattice transformation of activated gangue. The experiments show that calcination can improve pozzolanic activity of gangue and its activity is higher when gangue is calcinated under 600～800℃; metakaolinite is the main source of gangue activity that is created after calcination of gangue.

关 键 词：煤矸石 煅烧 火山灰活性 强度 

分 类 号：TQ172.44[化学工程—水泥工业]