混凝土塑性收缩的试验研究  

Experimental Study on Plastic Shrinkage of Concrete

作　　者：王成启 金建昌 

机构地区：[1]上海港湾工程设计研究院 [2]中交第三航务工程局有限公司

出　　处：《工程质量》2008年第2期40-43,共4页Construction Quality

摘　　要：通过试验研究了混凝土用水量、水灰比等混凝土配合比参数对混凝土塑性收缩的影响。试验研究表明,混凝土塑性收缩与水灰比有一定的对应关系,并存在某一临界值(0.42),当水灰比处于某一临界值时,具有较大的塑性收缩。此外,在水灰比一定的情况下,用水量较大的混凝土具有较大的塑性收缩。Plastic Shrinkage easily results in concrete crack. In this paper, effect of Concrete mix on plastic Shrinkage was studied. The experimental results show that plastic Shrinkage relate to water to cement ratio and there is critical water to cement ratio. When water to cement ratio is critical value, concrete has big plastic shrinkage. In addition, water quantity of concrete is bigger, plastic shrinkage of concrete is bigger when water to cement ratio is invariable.

关 键 词：混凝土塑性收缩 裂缝 用水量 水灰比 临界值 

分 类 号：TU755.7[建筑科学—建筑技术科学]