Effect of Limestone Powder on Autogenous Shrinkage of Concrete

Abstract:

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.

• Periodical: Applied Mechanics and Materials (Volumes 88-89)
• Pages: 767-771
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.88-89.767
• Online since: August 2011
• Authors: Bin Wang, You Ping Ding, Jing Gao, Jin Fang Sun, Miao Miao Cui, Long Han
• Keywords: Autogenous Shrinkage, Chemically Combined Water, Concrete, Fineness, Limestone Powder

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