研究了腐蚀龄期、硫酸根离子浓度、溶解环境变化时，混凝土粉末对硫酸根离子固化能力的影响。结果表明，在相同浓度硫酸钠溶液浸泡时，随腐蚀龄期的增长，混凝土粉未对硫酸根离子固化能力不断增强；混凝土粉末对硫酸根离子的固化能力随硫酸根离子浓度的升高近似服从二次函数，相关系数达到0．96以上；在相同浓度的硫酸根离子溶液中，相比于水溶液环境，稀硝酸环境下混凝土对硫酸根离子的固化能力更大。
The effects of age corrosion, sulfate ion concentration and dissolved environment on the binding capacity of concrete powders to sulfate ions were studied. Results indicate that in the same concentration of sodium sulfate solution soaking, the binding capacity to sulfate ions increased with the growing of age corrosion. The binding capacity of concrete powders to sulfate ions approximately obeys quadratic function with the increase of sulfate ion concentration, and the correlation coefficient reached more than 0.96. The binding capacity of concrete to sulfate ions was bigger in nitric acid environment than in aqueous soluble environment in the sulfate ion solution with the same concentration.
参考文献
| [1] | Adam Neville .The confused world of sulfate attack on concrete[J].Cement and Concrete Research,2004(8):1275-1296. |
| [2] | 乔宏霞,何忠茂,朱彦鹏,杜雷,刘翠兰.盐渍土地区高性能混凝土耐久性研究[J].中国铁道科学,2006(04):32-37. |
| [3] | 金祖权 .西部地区严酷环境下混凝土的耐久性与寿命预测[D].东南大学,2006. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%