溶液浓度和温度对混凝土硫酸盐侵蚀速度影响

刘亚辉; 申春妮; 方祥位; 徐守彬; 张伟

doi:10.11835/j.issn.1674-4764.2008.01.032

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溶液浓度和温度对混凝土硫酸盐侵蚀速度影响

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- 溶液浓度和温度对混凝土硫酸盐侵蚀速度影响
- Investigations on Effect of Solution Concentration and Temperature on Rate of Concrete Sulfate Attack
- 土木与环境工程学报（中英文） 2008年30卷第1期页码：129-135
- 作者机构：
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  中铁十七局集团科研项目
- DOI：10.11835/j.issn.1674-4764.2008.01.032
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- 纸质出版：2008
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刘亚辉, 申春妮, 方祥位, 等. 溶液浓度和温度对混凝土硫酸盐侵蚀速度影响[J]. 土木与环境工程学报（中英文）, 2008,30(1):129-135.

LIU YA-hui, SHEN Chun-ni, FANG Xiang-wei, et al. Investigations on Effect of Solution Concentration and Temperature on Rate of Concrete Sulfate Attack[J]. Journal of Civil and Environmental Engineering, 2008, 30(1): 129-135.
刘亚辉, 申春妮, 方祥位, 等. 溶液浓度和温度对混凝土硫酸盐侵蚀速度影响[J]. 土木与环境工程学报（中英文）, 2008,30(1):129-135. DOI： 10.11835/j.issn.1674-4764.2008.01.032.

LIU YA-hui, SHEN Chun-ni, FANG Xiang-wei, et al. Investigations on Effect of Solution Concentration and Temperature on Rate of Concrete Sulfate Attack[J]. Journal of Civil and Environmental Engineering, 2008, 30(1): 129-135. DOI： 10.11835/j.issn.1674-4764.2008.01.032.

摘要

通过大量试验

采用强度损失、试件的长度变化和重量损失3种判定指标研究了溶液浓度和温度对硫酸盐侵蚀速度的影响。结果表明:侵蚀破坏速度随着溶液浓度增大和温度的提高而加快

但当浓度和温度超过某一数值后继续增加

侵蚀破坏的速度反而减慢。在各种影响因素下

硫酸钠侵蚀破坏的速度比硫酸镁侵蚀快。对硫酸钠型侵蚀

采用抗折抗蚀系数作为判定指标较为合理

而对硫酸镁型侵蚀

应该综合考虑抗折抗蚀系数和抗压抗蚀系数。

Abstract

Through many tests and standard analysis

the effects of solution concentration and temperature on rate of concrete sulfate attack were investigated.The test results show that when solution concentration and temperature are lower than certain value

the speed of attack is accelerated with increasing concentration and temperature

however

higher temperature and concentration of solution may decrease the rate of attack.The speed of attack of sodium sulfate is faster than the one of attack of magnesium sulfate under various factors.It is suitable to adopt the coefficient of tensile as the accelerated assessing criterion for the attack of sodium sulfate.The coefficient of tensile and compressive strength should be considered together for the attack of magnesium sulfate.

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