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| 摘要: |
| 为研究弯曲荷栽对混凝土中氯离子扩散速度的影响，测试了在持续弯曲荷栽作用下的混凝土于NaCl溶液中浸泡30，70，120，200d后的自由氯离子含量．结果表明，持续弯曲荷栽作用增加了氯离子在混凝土中的含量，氯离子扩散系数与荷栽作用有一定的关系． |
| 关键词: 混凝土 弯曲 荷载作用 氯离子扩散系数 NaCl溶液 氯离子含量 扩散速度 |
| DOI： |
| 分类号:TU528.042 TG386.31 |
| 基金项目:辽宁省技术科学基金资助项目(001077) |
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| Influence of Flexural Loading on Permeability of Chloride Ion in Concrete |
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HE Shi-qin GONG Jin-xin
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| Abstract: |
| The study of chloride permeability in concrete is a main aspect of the durability of concrete and many factors affect the chloride concentration profiles in concrete and diffusion coefficient. A series of concrete specimens was exposed in a loaded state in a container filled with 3.5% sodium chloride solutions for 30,70,120,200 days, and the effect of flexural loading was estimated from chloride ingress level. The results show that the effect of the flexural load increases the permeasion of chlorides into concrete. There is also a relationship between D(t) and the loading level. |
| Key words: concrete,chloride concentration,diffusion coefficient,Fick's second law,flexural loading |
