蒸汽养护条件下复合水泥胶凝材料的优化匹配  

Cement Composite Material Optimization on the Condition of Steam Curing

作　　者：王昕[1] 刘晨[1] 颜碧兰[1] 俞枢根 马国宁 刘云[1] 魏丽颖[1] 郑旭[1] 张金山[1] 温培艳[1] 

机构地区：[1]中国建筑材料科学研究总院,北京100024 [2]宁波科环新型建材股份有限公司,余饶315400

出　　处：《硅酸盐通报》2017年第10期3347-3352,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家重点项发计划(2016YFF0202203);696项目(2016YFF0202203)

摘　　要：利用XRD、SEM、TG/DSC、MIP等测试方法,对常压高温蒸汽养护下矿渣和粉煤灰等不同组成的复合胶凝材料物理性能及水化特性差异进行研究。结果表明,85℃常压蒸养条件下水泥水化产物与标准养护下基本相同,但水化产物数量有大幅提高,且有少量C_9S_6H_(18)和钙矾石(AFt)稳定存在。辅助胶凝材料的适宜匹配,使水泥石结构较致密,蒸养强度较高。少量硅灰的掺加,有利于优化水泥石结构,促进蒸养条件下水泥石强度发展。The properties and hydration characteristics of cement mixed with slag and fly ash composite on the condition of high temperature steam curing were studied by using XRD,SEM,DSC and other test methods. The results show that the hydration products under the steam curing condition at 85 ℃ are basically the same as normal curing condition at 20 ℃,while the amount of hydration products is higher than the latter,and metastable hydrated calcium silicate and ettringite existed. The proper proportion of secondary cementitious material made the cement stone structure more compact and the strength of cement stone under steam curing condition is higher. Mixed with a little silica fume,the structure of cement stone is optimized,and strength of cement under steam curing condition is promoted.

关 键 词：蒸汽养护 复合胶凝材料 水泥 水化产物 

分 类 号：TU525[建筑科学—建筑技术科学]