摘要
研究了普通硅酸盐水泥(ordinaryportlandcement,OPC)、快硬硫铝酸盐水泥(rapidhardeningsulphoaluminatecement,SAC)、抗硫酸盐水泥(sulfateresistantportlandcement,SRC)及OPC–SAC复合水泥掺加30%(质量分数)石灰石粉的砂浆试件在(5±1)℃,浸泡于5%(质量分数)MgSO4溶液中各龄期的强度、膨胀率、外观变化及其水化产物。结果表明:碳硫硅酸钙型硫酸盐侵蚀(Thaumasitesulfateattack,TSA)程度与水泥品种有关,SRC不能有效地防止TSA破坏,而OPC与SAC复合能够取得较好的抗TSA效果。
Abstract： The strength, expansive rate, visual appearance and hydrate of various cements at different hydration ages were studied by immersing the mortar specimens in 5 % （in mass） MgSO4 corrosion solution at （5±1） ℃. The cements used for mortar specimens were made of ordinary portland cement （OPC）, rapid hardening sulphoaluminate cement （SAC）, sulfate resistant portland cement （SRC）, and OPC-SAC composite cement （PAC）, with 30% （in mass） limestone powders respectively. The study shows that the resistance to thaumasite sulfate attack （TSA） are different for the variety of cement, SRC can＇t resist TSA damage effectuall, PAC exhibits a good resistance to the TSA.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2006年第5期622-625,共4页
Journal of The Chinese Ceramic Society
基金
国家"973"计划(2001CB610704–3)
湖北省科技厅重点攻关(200410G0121)资助项目。
