Numerical analysis of localized steel corrosion in concrete

Although the existing studies on the estimation of corrosion induced cracking time of concrete cover practically assumed that the shape of corrosion product is uniform, experimental observations show that the shape of the corrosion product is considerably localized. In this study, numerical estimation of localized corrosion was accomplished based on the assumption that the main cause of corrosion localization is the variation of chloride ions around the steel. The target case was limited to a two-dimensional corrosion. Analysis results show that the maximum corrosion depth remains about 1.3 similar to 3.5 times deeper than the average corrosion depth after 3.5 years of active corrosion. Parametric study reveals that the diffusion coefficient of chloride ion is the parameter most responsible for corrosion localization. (C) 2007 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2008-06
Language
ENG
Keywords

COVER CRACKING; CHLORIDE DIFFUSION; REINFORCEMENT; DETERIORATION; SIMULATION; MODEL; TIME

Citation

CONSTRUCTION AND BUILDING MATERIALS, v.22, pp.1129 - 1136

ISSN
0950-0618
DOI
10.1016/j.conbuildmat.2007.02.007
URI
http://hdl.handle.net/10203/9399
Appears in Collection
CE-Journal Papers(저널논문)
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