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Coupling effects of influence factors on probability of corrosion initiation time of reinforced concrete

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Abstract

The coupling model of major influence factors such as environmental relative humidity, load-induced crack and stress state affecting the chloride diffusion process in concrete is discussed. The probability distributions of the critical chloride concentration C C, the chloride diffusion coefficient D, and the surface chloride concentration C s were determined based on the collected natural exposure data. And the estimation of probability of corrosion initiation considering the coupling effects of influence factors is presented. It is found that the relative humidity and curing time are the most effective factors affecting the probability of corrosion initiation before and after 10 years of exposure time. At the same exposure time, the influence of load-induced crack and stress state on the probability of corrosion initiation is obvious, in which the effect of crack is the most one.

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Authors and Affiliations

  1. College of Civil Engineering, Shenzhen Municipal Key Laboratory for Durability of Civil Engineering Structure, Shenzhen University, Shenzhen, 518060, China

    Xiao-gang Zhang  (张小刚) & Feng Xing  (邢锋)

  2. Department of Architecture and Building Engineering, Kanagawa University, Yokohama, 2218686, Japan

    Yan-gang Zhao  (赵衍刚)

  3. School of Civil Engineering and Architecture, Central South University, Changsha, 410075, China

    Zhao-hui Lu  (卢朝辉)

Authors
  1. Xiao-gang Zhang  (张小刚)
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  2. Yan-gang Zhao  (赵衍刚)
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  3. Feng Xing  (邢锋)
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  4. Zhao-hui Lu  (卢朝辉)
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Corresponding author

Correspondence to Xiao-gang Zhang  (张小刚).

Additional information

Foundation item: Project(50925829) supported by the National Science Fund for Distinguished Young Scholars of China; Project(50908148) supported by the National Natural Science Foundation of China; Projects(2009-K4-23, 2010-11-33) supported by the Research of Ministry of Housing and Urban Rural Development of China

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Zhang, Xg., Zhao, Yg., Xing, F. et al. Coupling effects of influence factors on probability of corrosion initiation time of reinforced concrete. J. Cent. South Univ. Technol. 18, 223–229 (2011). https://doi.org/10.1007/s11771-011-0683-9

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  • DOI: https://doi.org/10.1007/s11771-011-0683-9

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