Influence of Spatial Distribution of Chloride Ion Concentration on Non-Uniform Corrosion of Reinforcement in Concrete

ZHAO Peng; ZHANG Xizhe; SHEN Jian; CHEN Jiejing; YU Ben; JIN Weiliang; XIA Jin

doi:10.13204/j.gyjzG22070305

Volume 53 Issue 3

Mar. 2023

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ZHAO Peng, ZHANG Xizhe, SHEN Jian, CHEN Jiejing, YU Ben, JIN Weiliang, XIA Jin. Influence of Spatial Distribution of Chloride Ion Concentration on Non-Uniform Corrosion of Reinforcement in Concrete[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 201-207. doi: 10.13204/j.gyjzG22070305

Citation:

ZHAO Peng, ZHANG Xizhe, SHEN Jian, CHEN Jiejing, YU Ben, JIN Weiliang, XIA Jin. Influence of Spatial Distribution of Chloride Ion Concentration on Non-Uniform Corrosion of Reinforcement in Concrete[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 201-207. doi: 10.13204/j.gyjzG22070305

Citation:

ZHAO Peng, ZHANG Xizhe, SHEN Jian, CHEN Jiejing, YU Ben, JIN Weiliang, XIA Jin. Influence of Spatial Distribution of Chloride Ion Concentration on Non-Uniform Corrosion of Reinforcement in Concrete[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 201-207. doi: 10.13204/j.gyjzG22070305

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Influence of Spatial Distribution of Chloride Ion Concentration on Non-Uniform Corrosion of Reinforcement in Concrete

doi: 10.13204/j.gyjzG22070305

ZHAO Peng^1,2,
ZHANG Xizhe³,
SHEN Jian⁴,
CHEN Jiejing^{5
,
,},
YU Ben^1,2,
JIN Weiliang⁵,
XIA Jin⁵

1. State Grid Tianjin Electric Power Research Institute, Tianjin 300384, China;
2. Tianjin Key Laboratory of Electric Power Internet of Things, Tianjin 300384, China;
3. State Grid Tianjin Electric Power Company, Tianjin 300384, China;
4. The Architectural Design and Research Institute of Zhejiang University Co., Ltd., Hangzhou 310028, China;
5. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China

Received Date: 2022-07-03

Abstract

Abstract

In order to explore the reinforcement non-uniform corrosion under the influence of the spatial distribution characteristics of surface chloride ion concentration, a coupling model of mass transport and reinforcement electrochemical corrosion was constructed in this paper. Based on the surface chloride concentration data of concrete in real marine environment, the free chloride concentration distribution, current density distribution and corrosion form of internal reinforcement were analyzed. The results show that the distribution characteristics of surface chloride ion concentration of reinforcement and concrete are basically the same in the longitudinal direction, but the migration of chloride ion in the circumferential direction makes the development law of surface chloride ion concentration of reinforcement and concrete different. In circumferential direction, micro cell corrosion of reinforcement starts from the side with high surface chloride ion concentration of the concrete and develops into uniform corrosion on the whole section.
- chloride ion,
- concrete,
- non-uniform corrosion of reinforcement,
- micro or macro cell corrosion

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References(20)

References

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