Influence of concrete constituents on drying shrinkage of concrete at same compressive strengths

被引：0

作者：

机构：

[1] College of Civil Engineering, Shaoxing University, Shaoxing

[2] College of Materials Science and Engineering, Southeast University, Nanjing

[3] Shanghai-Hangzhou Passenger Dedicated Line Limited Company, Shanghai

来源：

He, Zhi-Hai | 1600年 / American Scientific Publishers卷 / 09期

关键词：

Concrete; Drying Shrinkage; Fiber; Porosity; Same Compressive Strength; Shrinkage Reducing Admixture;

D O I：

10.1166/jamr.2014.1186

中图分类号：

学科分类号：

摘要：

The influence of polyvinyl alcohol (PVA) fiber, shrinkage reducing admixture (SRA) and the combined addition of fly ash and slag on drying shrinkage of concrete with 7d same compressive strengths were studied by testing drying shrinkage, evaporable water test and scanning electron microscope (SEM). The results indicate that drying shrinkage of concrete develops rapidly, becoming stable after 100d; SRA and the combined addition of fly ash and slag can refine pore, and especially reduce the fine capillary porosity to decrease drying shrinkage, the better decrease with SRA; PVA fiber deceases the total porosity and the pore and coarse capillary porosity, but increases the fine capillary porosity to increase drying shrinkage. Copyright © 2014 American Scientific Publishers All rights reserved.

引用

页码：50 / 53

页数：3

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