矿物掺合料对C100混凝土早期收缩及干缩的影响  

Effects of Mineral Admixtures on Early Age and Drying Shrinkage of C100 High Strength Concrete

作　　者：徐仁崇[1] 李晓斌[1] 桂苗苗[1] 江达宣[1] 

机构地区：[1]厦门市建筑科学研究院集团股份有限公司,361004

出　　处：《混凝土与水泥制品》2013年第1期24-27,共4页China Concrete and Cement Products

基　　金：厦门市科技计划资助项目(3502Z20100044)

摘　　要：研究了复掺情况下,矿物掺合料种类及掺量对C100高强混凝土早期收缩及干燥收缩的影响。结果表明,混凝土的早期收缩和干燥收缩随着粉煤灰掺量的增加逐渐减少,粉煤灰对早期收缩的抑制作用优于干燥收缩;随着矿粉掺量的增加,混凝土的早期收缩增大而干燥收缩减少;硅灰的掺入增大了混凝土的早期收缩与干燥收缩,且随着硅灰掺量的增加,这种作用更加明显。Effects of category and dosage of mineral admixtures on the early age and drying shrinkage of C100 high strength concrete with mixing condition are investigated. The results indicate that the early age and drying shrinkage will decrease with the increase dosage of fly ash, and the effect on reducing early age shrinkage is better than that of reducing drying shrinkage. The early age shrinkage will increase and the drying shrinkage will decrease when the dosage of ground granulated blast furnace slag increases. Silica fume can increase the early age and drying shrinkage of concrete, and the effect will be more obvious when the increasing dosage of silica fume.

关 键 词：矿物掺合料 C100混凝土 早期收缩 干燥收缩 

分 类 号：TU528.31[建筑科学—建筑技术科学]