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

Authors

Ai-ling DU, Department of Chemical Engineering, Shangdong University of Technology, Jinan 250061, China
Wen-tao HOU, Department of Chemical Engineering, Shangdong University of Technology, Jinan 250061, China
He-ming ZHANG, Department of Chemical Engineering, Shangdong University of Technology, Jinan 250061, China
Jian-qun LUO, Department of Chemical Engineering, Shangdong University of Technology, Jinan 250061, China

Corresponding Author

Ai-ling DU

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.

Keywords

Reinforcing bar, Linear polarization, Corrosion rate, Concrete

DOI Link

https://doi.org/10.61558/2993-074X.1390

Publication Date

2000-08-28

Online Available Date

2000-08-28

Revised Date

2000-01-12

Received Date

1999-11-08

Recommended Citation

Ai-ling DU, Wen-tao HOU, He-ming ZHANG, Jian-qun LUO. The lineal Polarization Method for Corrosion Rate Measurement of Reinforcing Bar of Concrete in Situ[J]. Journal of Electrochemistry, 2000 , 6(3): 297-304.
DOI: 10.61558/2993-074X.1390
Available at: https://jelectrochem.xmu.edu.cn/journal/vol6/iss3/5