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

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.