水泥细度对混凝土强度与干燥收缩的影响  

Effects of cement fineness on strength and drying shrinkage of concrete

作　　者：李豪举[1] 杨长辉[1] 王冲[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045

出　　处：《混凝土》2011年第10期7-9,共3页Concrete

基　　金：西部交通科技项目(2009318000033)

摘　　要：试验研究了水泥细度对混凝土28d抗压强度与干燥收缩的影响。结果表明，其他条件一定时，水泥细度在297-400m2／kg范围内，随水泥比表面积增加混凝土28d抗压强度及干缩呈增大趋势，但当水泥比表面积增加至450mVkg时，混凝土28d强度发展受到影响，干缩反而减小；用同一细度水泥配制的混凝土，在同龄期内其干缩随着水灰比的增大而增大，水灰比对混凝土干缩的影响程度大于水泥细度。The effects of fineness of cement on 28 d compressive strength and the drying shrinkage of concrete were investigated.When others conditions were the same ,the results show that the 28 d compressive strength and drying shrinkage of concrete increased with cement fineness increasing from 297-400 m^2/kg,but the development of compressive strength affected and drying shrinkage of cement fineness of the 450 m^2/kg were less.Prepared the concrete with the same fineness of cement, the drying shrinkage of concrete increase with the improving of water-cement ratio in the same age of days; the effects of water-cement ratio was greater than cement fineness on the drying shrinkage of concrete.

关 键 词：水泥细度 抗压强度 干缩 水灰比 

分 类 号：TU528.01[建筑科学—建筑技术科学]