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| 摘要: |
| 利用加载直流电场模拟杂散电流的方法,对杂散电流存在情况下氯离子向混凝土内部的传输特征进行了研究.结果表明：杂散电流的存在会明显加速氯离子向混凝土内部的传输,同时随着杂散电流作用时间的延长和电流强度的增大,杂散电流对氯离子传输的加速作用越发明显.此外,与无杂散电流情况下氯离子在混凝土内部均匀扩散的特点相比,杂散电流的存在使得氯离子在混凝土内部的渗透面变为一个抛物面,并且在垂直钢筋的方向上氯离子侵入深度最大. |
| 关键词: 杂散电流 氯离子 传输特征 混凝土 耐久性 |
| DOI： |
| 分类号:TU528.01 |
| 基金项目:国家自然科学基金资助项目(50772084);;宁波市自然科学基金资助项目(2009A610156) |
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| Transport Characteristics of Chloride Ion in Concrete with Stray Current |
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GENG Jian DING Qing-jun SUN Jia-ying SUN Bing-nan
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| Abstract: |
| The transport characteristics of chloride ion into concrete with stray current was investigated by loading direct current simulating stray current test.The results indicate that the transport of chloride ion into concrete is accelerated when stray current is imposed,and this effect is enhanced with the extending presence and the increasing intensity of stray current.In contrast with the uniform transport characteristics of chloride ion into concrete without stray current,the permeable zone is parabolic dish... |
| Key words: stray current chloride ion transport characteristics concrete durability |
