Effect of Limestone Powder on Autogenous Shrinkage of Concrete

作者：Bin Wang, You Ping Ding, Jing Gao, Jin Fang Sun, Miao Cui, Han Long · 发表于：Applied Mechanics and Materials · 年份：2011 · DOI：10.4028/www.scientific.net/amm.88-89.767 · 被引用次数：4 · 研究领域：Concrete Properties and Behavior、Concrete and Cement Materials Research、Innovative concrete reinforcement materials

The effect law and mechanism of limestone powder on autogenous shrinkage of concrete was studied. The results indicate that limestone powder accelerates autogenous shrinkage speed of concrete on which effect of fineness is little, and limestone powder reduces autogenous shrinkage which decreases with the increase of fineness. The change law of autogenous shrinkage of concrete is consistent with that of chemically combined water of paste. Autogenous shrinkage of concrete is also divided into 2 stages according to the initial vapor saturated stage and subsequent reduction stage of interior relative humidity, with both showing a good linear correlation at each stage.