高碱蒸养对粉煤灰化学活性的影响  

Effect of Steam Curing in High Alkaline Environment on Coal Ash’s Chemical Activation

作　　者：罗忠涛[1] 马保国 杨久俊[1] 肖宇领[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450052 [2]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉450032

出　　处：《粉煤灰》2011年第6期1-2,共2页Coal Ash China

基　　金：国家"973"(2009CB623201)资助项目;中国博士后科学基金项目(20100480854)

摘　　要：通过模拟高碱蒸养环境,结合抗压强度测定及电子显微镜(SEM)、红外光谱(FTIR),微观分析,研究了粉煤灰经高碱蒸养后的化学活性变化。结果表明:在本试验条件下,经过200℃热养护及湿排模拟均不能有效改变粉煤灰颗粒表面的硅铝网络结构聚合度,说明单纯的蒸养过程不能对粉煤灰的表面结构形成有效解聚。Simulated steam curing in high alkaline environment,combined with the compressive strength measurement and SEM,FTIR microscopic analysis,the fly ash’s chemical activity after steam curing in high alkaline environment was studied.The results showed that： in this experimental condition,the polymerization of surface structure of Si-Al network could not be effectively changed in the condition of 200 heat conservation and simulative wet-discharged fly ash,indicating pure steam curing process can not form effective depolymerization on the surface structure of fly ash.

关 键 词：粉煤灰 蒸养 化学活性 机理 

分 类 号：X705[环境科学与工程—环境工程]