STUDY ON NON-UNIFORM CORROSION OF REBAR EMBEDDED IN CONCRETE BY WIRE - BEAM ELECTRODE

J Chin Soc Corr Pro

2005, Vol. 25

Issue (2): 88-92 DOI:

Research Report

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STUDY ON NON-UNIFORM CORROSION OF REBAR EMBEDDED IN CONCRETE BY WIRE - BEAM ELECTRODE

Jinfeng Hu;Guoxi Li;Kai Deng;Yang Liu

湖南大学化学化工学院

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Abstract The corrosion of rebar in concrete was studied by 8×8 liner wire - beam electrode.The corrosion potential,polarization resistance and corrosion rates distributions of wire - beam electrode in the same or different depth were obtained by estimated corrosion potential and polarization resistance in 10% NaCl solution.The effect of chlorine ion concentration and the structure of concrete on them were studied.The results showed that the xorrosion of iron wires in concrete were nin-uniform.The corrosion potential and polarization resistance were scattered.With the increase of immersion time.the corrosion potential shifted negatively,the polarization resistance reduced and the difference of corosion potential became larger.With increasing the embedded depth of iron wire,the negative shift value of corrosion potential,chlorine ion concentration and corrosion rates reduced,but polrization resistance increased.

Key words: concrete corrosion wire-beam electrode rebar

Received: 12 September 2003

ZTFLH:

TG172.6

Corresponding Authors: Jinfeng Hu E-mail: guoxili@vip.sina.com.cn

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Jinfeng Hu; Guoxi Li; Kai Deng; Yang Liu. STUDY ON NON-UNIFORM CORROSION OF REBAR EMBEDDED IN CONCRETE BY WIRE - BEAM ELECTRODE. J Chin Soc Corr Pro, 2005, 25(2): 88-92 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2005/V25/I2/88

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