摘要
水化硅酸钙(C-S-H)是水泥水化的最主要产物,也是混凝土最主要的强度来源。采用溶胶-凝胶法合成了水化硅酸钙早强剂,并进行了测试分析。结果表明,在25℃时,通过高速搅拌,以及在特定的分散剂溶液作用下,制备的水化硅酸钙早强剂的粒径最小,分散性最好,将其掺入水泥后,可大大降低其成核能垒,促进水泥水化,显著缩短水泥凝结时间,提高其早期强度。
Calcium silicate hydrate(C-S-H)is the most important hydration product of cement hydration and the most critical source of strength for concrete.In this paper,hydrated calcium silicate early strength agent was synthesized by sol-gel method,and a series of tests were carried out.The results show that the hydrated calcium silicate early strength agent prepared by high-speed stirring and under the action of specific dispersant solution has the smallest particle size and the best dispersion at 25℃.After being blended into cement,it can greatly reduce its nucleation energy barrier,promote cement hydration,significantly shorten the cement setting time and improve early strength of concrete.
作者
朱少宏
ZHU Shaohong(Prominent Science New Materials Group Co.Ltd.,Xiamen 361100,China)
出处
《新型建筑材料》
北大核心
2020年第1期34-37,共4页
New Building Materials
关键词
水化硅酸钙早强剂
溶胶凝胶法
高速搅拌
分散剂
性能研究
hydrated calcium silicate early strength agent
sol-gel method
high-speed stirring
dispersant
performance study