影响自密实混凝土坍落度损失因素的试验研究  

Studies on slump loss of self-compacting concrete

作　　者：杨静[1] 孟志良[1,2] 孙建恒[1] 李宏斌[1] 白永兵[1] 赵淑丽[1] 

机构地区：[1]河北农业大学城乡建设学院,河北保定071001 [2]重庆大学材料科学与工程学院,重庆400045

出　　处：《四川建筑科学研究》2009年第4期193-196,共4页Sichuan Building Science

基　　金：河北省科技攻关资助项目(06213701D);河北省建设厅资助项目资助(2004-122)

摘　　要：自密实混凝土拌合物坍落度损失问题是自密实混凝土研究的热点和难点之一。从延缓水泥早期水化速度出发,分别针对原材料中水泥品种、粉煤灰、高效减水剂种类及缓凝剂等4个因素,对坍落度损失的影响进行了试验研究,并就其机理进行了初步探讨。Controlling slump loss is a kind of key techniquefor ~f-compacfing concrete. Starting from the measures for retarding early hydration of cement, this paper investigates experimentally on slump loss of self-compacting concrete in four affecting factors which are types of cement,fly ash,sorts of superplastieizer and retarder. And the paper puts forward some viewpoints on the mechanism of slump less of the self-compacting concrete mixture based on the research.

关 键 词：自密实混凝土 坍落度损失 外加剂 

分 类 号：TU502[建筑科学—建筑技术科学]