大体积混凝土超缓凝早强特性试验研究

The Construction Experiment of Super-set-retarding High-early-strength Massive Concrete

采用"超量取代法"和"双掺水泥"试配大体积混凝土,成功地应用于荆州长江公路大桥,对大体积混凝土的减水降热、延时缓凝和增强防裂具有较好的效果。

The paper gives mixture proportioning in construction of ＂excessive replacement method＂ and ＂two sorts of admixture cement＂ concrete C30 by construction experiment and dynamic analysis of super set-retarding mass concrete. The mixture proportioning will bring good effect for reducing water and heat, delaying initial setting and cracking prevention of mass con- crete.