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电化学(中英文) ›› 2000, Vol. 6 ›› Issue (3): 297-304. 

• 研究论文 • 上一篇    下一篇

线性极化方法测量混凝土中钢筋的腐蚀速度(英文)

杜爱玲,侯文涛,张鹤鸣,罗建群   

  1. 山东工业大学化学工程系!山东济南250061,山东工业大学化学工程系!山东济南250061,山东工业大学化学工程系!山东济南250061,山东工业大学化学工程系!山东济南250061
  • 收稿日期:2000-08-28 修回日期:2000-08-28 出版日期:2000-08-28 发布日期:2000-08-28

The lineal Polarization Method for Corrosion Rate Measurement of Reinforcing Bar of Concrete in Situ

DU Ai_ling *, HOU Wen_tao, ZHANG He_ming, LUO Jian_qun   

  1. (Department of Chemical Engineering, Shangdong University of Technology, Jinan 250061 China
  • Received:2000-08-28 Revised:2000-08-28 Published:2000-08-28 Online:2000-08-28

摘要: 本文尝试用线性极化的方法对埋置于混凝土内部的钢筋的腐蚀速度进行测量 .自行设计了一组特殊结构的辅助电极 ,制备了不同尺寸和保护层厚度的混凝土试样 .通过改变辅助电极 ,调整电位的分布 ,使线性极化方法的测量误差降低到腐蚀速度测量允许的误差范围内 .确定了两种适用于混凝土中钢筋腐蚀速度测量的辅助电极 .

关键词: 钢筋, 线性极化, 腐蚀速度, 混凝土A

Abstract: A linear polarization method was applied to measure corrosion rate of reinforcing bar of concrete in situ. Generally in the experiment, the area and shape of the reinforcing bar as a working electrode can be changed and adjusted according to our needs. But polarization area cannot be defined when reinforcing bar is polarized in situ, so that a real R p can't be obtained. Thus the purpose of present work is to improve the measurement system. We used the double_ring auxiliary electrodes made by ourselves. The size of the double_ring auxiliary electrodes was adjusted repeatedly until the real polarization area was equivalent to one of the auxiliary electrodes. Using such an auxiliary electrode to measure R p, we obtained the result that the measurement error of R p is about 2.5%. This result can meet the need of measurement in situ.

Key words: Reinforcing bar, Linear polarization, Corrosion rate, Concrete

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