Research on Reinforcement Corrosion in Concrete by Using Electrochemical Frequency Modulation Technology

Journal of Chinese Society for Corrosion and protection

2013, Vol. 33

Issue (2): 136-140 DOI:

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Research on Reinforcement Corrosion in Concrete by Using Electrochemical Frequency Modulation Technology

XU Chen, YUE Zengguo, JIN Weiliang

Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China

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Abstract Reinforcement corrosion is a hot issue of the durability of concrete structures. In order to obtain more realistic reinforced corrosion kinetic parameters, Electrochemical Frequency Modulation technology was used in reinforced corrosion test. Compared with three-point method(one-way polarization) test results, test parameters of the Electrochemical Frequency Modulation technique was determined. The results showed that, for reinforced corrosion in concrete, B_a was in the range of 65 ~ 250 mV/ dec, lager than the value 30~120 mV/dec in solution. The polarization resistance R_P and the corrosion current I_corr obtained by Electrochemical Frequency Modulation test was analyzed to amend the B value of the linear polarization method.

Key words: concrete durability rebar corrosion electrochemical frequency modulation(EFM) corrosion current density Tafel linear polarization

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XU Chen,YUE Zengguo,JIN Weiliang. Research on Reinforcement Corrosion in Concrete by Using Electrochemical Frequency Modulation Technology. Journal of Chinese Society for Corrosion and protection, 2013, 33(2): 136-140.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2013/V33/I2/136

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