Effect of environment polarity on sulfate attack resistance of cementitious materials at low temperature

被引：0
|
作者：
Xiao, Jia [1 ]
Meng, Qing-Ye [1 ,2 ]
Guo, Ming-Lei [1 ]
Wu, Ting [1 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha, China
[2] Chinese Academy of Inspection and Quarantine Comprehensive Test Center, Beijing, China
来源：
Gongneng Cailiao/Journal of Functional Materials | 2015年 / 46卷 / 07期
关键词：
Cementitious materials - Effect of environments - Ground limestone - Polarity - Sulfate-attack resistances - Thaumasite - Thaumasite form of sulfate attack - Thaumasite formation;
D O I：
10.3969/j.issn.1001-9731.2015.07.007
中图分类号：
学科分类号：
摘要：
By means of analyzing the effect of glycerol sulfate attack resistance of cement-ground limestone cementitious materials at low temperature(5, 5% Na2SO4), the effect of solvent polarity on thaumasite formation was studied. The results showed that the degree of corrosion of cement-limestone powder specimens aggravated with prolonged, and the corrosion products were mainly thaumasite. The specimens without glycerol fell out at edges and corners obviously, while the glycerol reduced the generation of thaumasite in the corrosion products, and the generation of thaumasite decreased with the increase of glycerol content. Glycerol can reduce the generation of thaumasite in cement-ground limestone cementitious material, and lowering environment polarity of cementitious materials could improve the resistance of cementitious material to thaumasite form of sulfate attack at low temperature. ©, 2015, Journal of Functional Materials. All right reserved.
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页码：07035 / 07038
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