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中国腐蚀与防护学报  2013, Vol. 33 Issue (1): 75-80    
  技术报告 本期目录 | 过刊浏览 |
电化学修复后钢筋极化状态分析
金伟良1,2 ,郭 柱1, 许 晨1
1. 浙江大学结构工程研究所 杭州 310058;
2. 浙江大学宁波理工学院 宁波 315800
Polarization Analysis of Reinforced after Electrochemical Repair
JIN Weiliang1,2, GUO Zhu1, XU Chen1
1. Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China;
2. Ningbo Institute of Technology, Zhejiang University, Ningbo 315800, China
全文: PDF(5335 KB)  
摘要: 

利用阳极极化曲线(APC)研究模拟孔隙液中电化学修复方法对钢筋极化参数的影响。结果表明,通电结束2 h后钢筋阳极极化电流和电位较通电前均有较大变化:通电量P越大,阳极极化电流增大越多,钢筋电位降低越多。此后,阳极极化电流和钢筋电位开始回落,向通电前水平恢复,即有个去极化过程,去极化过程需要约42 d完成。钢筋去极化稳定后,其阳极极化电流和极化面积较通电前有所增大,是通电前的2 ~ 5倍;钢筋电位则回落到通电前水平。

关键词 阳极极化曲线(APC)模拟孔隙液电化学修复阳极极化电流钢筋电位    
Abstract

Different researchers make different conclusions on the reinforcement corrosion parameters after electrochemical repair. In order to give a reasonable explanation of the phenomenon, anodic polarization curve (APC) is employed to study the effects of electrochemical repair methods on polarization parameters of reinforced in simulated pore solution. The results show that the effects of different treatment duration and current density on the anodic polarization current and potential of the reinforced after various treatments. After the treatment, the anodic polarization current and reinforcement potential change a lot: the greater the power, the more the increase of anodic polarization current, the more the reduction of reinforcement potential. Over time, this change gradually weakens until smooth, which is a depolarization process, and usually takes 42 days. After depolarization, the polarization current of the reinforced is still relatively large compared with that before the treatment, usually 2~5 times, that shows the treatment can increase the polarization area of the reinforced, also 2~5 times; however, reinforcement potential changes little. By analysis of surface morphology of the reinforced, it is found that the surface of the reinforced becomes rougher after treatment, surface area increasing will make the polarization area increase, which is a reasonable interpretation of polarization current increasing after treatment.

Key wordsanodic polarization curve (APC)    simulated pore solution    electrochemical repair    anodic polarization current    reinforcement potential
    
ZTFLH:  TG174.1  

引用本文:

金伟良,郭柱,许晨. 电化学修复后钢筋极化状态分析[J]. 中国腐蚀与防护学报, 2013, 33(1): 75-80.
JIN Weiliang, GUO Zhu, XU Chen. Polarization Analysis of Reinforced after Electrochemical Repair. Journal of Chinese Society for Corrosion and protection, 2013, 33(1): 75-80.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2013/V33/I1/75

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