Chloride ion ingress distribution within an alternate wetting-drying marine environment area

Concrete structures in an alternate wetting-drying area often suffer from severe chloride ion ingress more than those in other areas. Field tests of marine structures were conducted, and chloride concentration is found to reach a maximum value at a certain elevation. The surface concentration and di...

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Bibliographic Details
Published in:Science China. Technological sciences 2012-04, Vol.55 (4), p.970-976
Main Authors: Xu, Chen, Li, ZhiYuan, Jin, WeiLiang, Zhang, Yi, Yao, ChangJian
Format: Article
Language:English
Subjects:
Chlorides
Computer simulation
Concrete structures
Elevation
Engineering
Gaussian
Indoor
Marine environments
Offshore structures
侵入
室内模拟实验
干燥地区
氯离子扩散系数
氯离子浓度
海洋结构
润湿
环境领域
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Summary:Concrete structures in an alternate wetting-drying area often suffer from severe chloride ion ingress more than those in other areas. Field tests of marine structures were conducted, and chloride concentration is found to reach a maximum value at a certain elevation. The surface concentration and diffusion coefficient of chloride ions at different elevations exhibit Gaussian unimodal curve distributions. Using the chloride ion unsaturated permeability model, the distribution regularity mechanism is analyzed. Finally, an improved indoor accelerated simulation experiment is proposed to simulate the rules governing chloride ion ingress into concrete structures in an alternate wetting-drying area.
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-011-4733-1