粉煤灰对阿利特-硫铝酸盐水泥凝结时间及水化研究  

Retarding Effect of Fly Ash on Alite Calcium Sulfoaluminate Cement and Its Corresponding Hydration Properties

作　　者：许文龙[1] 孙晋峰[1] 黎学润[1] 沈晓冬[1] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009

出　　处：《科学技术与工程》2015年第1期273-278,共6页Science Technology and Engineering

基　　金："长江学者和创新团队发展计划"创新团队(PCSIRT;IRT1146);江苏高校优势学科建设工程资助项目(PAPD)资助

摘　　要：通过在阿利特-硫铝酸盐水泥中添加粉煤灰,利用XRD、水化热和SEM来研究粉煤灰对该体系水化过程的影响。结果表明:粉煤灰对该体系有一定缓凝作用;并且随着掺量增加,作用越明显。粉煤灰主要影响水泥早期强度,对后期影响不大;当掺量≥30%时,对后期也有影响。火山灰反应在3 d时不太明显,一般在28 d时较容易观察到。The influence of fly ash on the alite-sulfoaluminate cement was focus on.X-Ray diffraction （XRD）,heat of hydration analysis and SEM were used to study the change of AC$A＇ s hydration.It shows that fly ash has strong significant effect on the AC$A system.The effect of retarder is stronger when the FA content is increase.The influence of FA on the AC$A cement is focus on the early strength,the 28 d＇ s strength is still well,when the content is more than 30％,it will influence 28 d＇ s strength.The pozzolanic reaction can＇ t be investigated at 3 d,but can be investigated at 28 d.

关 键 词：粉煤灰 凝结时间 水化 抗压强度 C4A3($) 

分 类 号：TQ172.1[化学工程—水泥工业]