Correlation between Water Freeze-Thaw Resistance and Salt Freeze-Thaw Resistance of Concrete

被引：0
|
作者：
Xu G. [1 ,2 ]
Gong C. [1 ,2 ]
Liu J. [1 ,2 ]
Gao D. [1 ,2 ]
Zeng Z. [1 ,2 ]
机构：
[1] Hubei Key Laboratory of Disaster Prevention and Mitigation, China Three Gorges University, Yichang
[2] College of Civil Engineering and Architecture, China Three Gorges University, Yichang
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2020年 / 23卷 / 03期
关键词：
Concrete; Durability; Frost resistance; Salt freeze-thaw cycle;
D O I：
10.3969/j.issn.1007-9629.2020.03.010
中图分类号：
学科分类号：
摘要：
Taking the relative dynamic elastic modulus as the evaluation index of freeze-thaw damage, the damage degree of artificial sand concrete specimens under two freeze-thaw cycles of water and NaCl solution with mass fraction of 3.5% was compared and analyzed, and the correlation was theoretically explained based on the osmotic pressure theory. The results show that there is a linear correlation between the cycles of water freeze-thaw resistance and salt freeze-thaw resistance, and the linear correlation has nothing to do with concrete mix proportion, strength grade and stone powder content. Further combined with the analysis of the data of the water sand freeze-thaw resistance and salt freeze-thaw resistance of natural sand concrete, the universality of this quantitative relationship is verified, that is, the water freeze-thaw resistance of concrete is about 2.8 times its salt freeze-thaw resistance. © 2020, Editorial Department of Journal of Building Materials. All right reserved.
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页码：552 / 556and562
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