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Study on interaction between macrocell and microcell in the early corrosion process of reinforcing steel in concrete

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Abstract

An array electrode technique was developed as a novel electrochemical method for studying the interaction between macrocell and microcell in the early corrosion process of reinforcing steel in cement mortar. The corrosion potential and galvanic current of macrocell corrosion of the reinforcing steel in cement mortar were imaged by the array electrode technique during the corrosion initiation and propagation. It was certified that the corrosion macrocell current is closely related with the difference of corrosion potential between the anodic and cathodic areas. The corrosion macrocell and microcell always exist during the corrosion process. The interaction of corrosion macrocell and corrosion microcell of steel in concrete was directly sensed by the array electrode for the first time, and was discussed in terms of corrosion electrochemistry.

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Authors and Affiliations

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China

    LanQiang Li, ShiGang Dong, RongGang Hu, RongGui Du, ChangJian Lin & XiangDong Zhuo

  2. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China

    Wei Wang & Jia Wang

Authors
  1. LanQiang Li
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  2. ShiGang Dong
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  3. Wei Wang
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  4. RongGang Hu
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  5. RongGui Du
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  6. ChangJian Lin
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  7. XiangDong Zhuo
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  8. Jia Wang
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Correspondence to ChangJian Lin.

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Li, L., Dong, S., Wang, W. et al. Study on interaction between macrocell and microcell in the early corrosion process of reinforcing steel in concrete. Sci. China Technol. Sci. 53, 1285–1289 (2010). https://doi.org/10.1007/s11431-010-0152-y

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  • DOI: https://doi.org/10.1007/s11431-010-0152-y

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