高铝水泥对改善磷石膏基水泥早期性能的试验研究  

Study on high alumina cement to improve early perfomance of phosphogypsum-base cement

作　　者：李文杰[1] 赵前[1] 吴有武[1] 徐军[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070

出　　处：《水泥》2013年第3期6-9,共4页Cement

基　　金：国家高技术研究发展计划(863)项目2012AA06A112

摘　　要：研究了在磷石膏基水泥中掺入少量的高铝水泥对该水泥性能的影响,并通过XRD和SEM分析探讨了该水泥体系的水化机理。研究结果表明,高铝水泥可以显著改善磷石膏基水泥的凝结时间和早期强度;当掺入6%的高铝水泥时,水泥的初凝时间和终凝时间分别减小了4h和5h左右,同时水泥的早期强度提高了11%左右,而后期强度变化不大。The influence of addition of some high alumina cement （HAC） on perfomance of phosphogypsum-base cement （PBC） was studied. By means of XRD and SEM, the hydration mechanism of cement was analyzed. The results showed that the HAC could significantly reduce the setting time and improve the early strength of PBC. The initial setting time and final setting time of PBC were reduced 4h and 5h respectively when the proportion of HAC approached to 6%, and the early strength of cement increased by 11%, meanwhile, the change of later strength was inconsiderable.

关 键 词：磷石膏 高铝水泥 凝结时间 

分 类 号：TQ172.7[化学工程—水泥工业]