Effect of Salt on Concrete Durability Under Dry-wet Cycle
[1]Sun Zengzhi,Tian Junzhuang,Yang Kai,et al.Effect of Salt on Concrete Durability Under Dry-wet Cycle[J].Journal of Zhengzhou University (Engineering Science),2016,37(05):6-11.[doi:10.13705/j.issn.1671-6833.2016.05.002]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
37
Number of periods:
2016 05
Page number:
6-11
Column:
Public date:
2016-11-25
- Title:
- Effect of Salt on Concrete Durability Under Dry-wet Cycle
- CLC:
- -
- Abstract:
- Based on the pier concrete of Qinghai Dexiang Expressway Bridge, the main soluble salt content along the line was analyzed. Through indoor simulation experiments, 7 kinds of corrosion solutions were prepared, and 4 kinds of mix ratio concrete were designed. The effect of salt on the durability of concrete under the action of dry-wet cycle was studied from the aspects of rate and relative elastic modulus. The results show that under the action of dry-wet cycle, single salts such as Na2S04, MgSO4, and NaCl solution have different damage forms and degrees to concrete. The same; in the compound salt solution, the corrosion damage effect of the compound salt on concrete will be superimposed, and the greater the concentration of the solution, the more serious the corrosion damage of concrete; the addition of cement-based self-healing materials and fly ash can improve the resistance of concrete to salt corrosion. destructive ability.
- References:
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