期刊
CORROSION SCIENCE
卷 69, 期 -, 页码 97-109出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2012.11.028
关键词
Steel reinforced concrete; Modelling studies; Oxygen reduction
资金
- China Ministry of Science and Technology [2009CB623200]
Chloride-induced corrosion of steel reinforcement in concrete may cause severe damage to RC structures. This paper examines the interaction between corrosion-induced cover crack growth and corrosion propagation. The coupled micro- and macro-cell corrosion process involved in a typical chloride-induced corrosion is numerically simulated. Both oxygen concentration and electrical potential distribution within concrete cover are considered in the electrochemical analysis. A uniform thick-walled cylinder model is formulated to simulate the cover surface crack width evolution. Results show that macrocell corrosion rate may not change so much while microcell corrosion rate increases a lot as oxygen permeability increases with corrosion-induced cover crack. (C) 2012 Elsevier Ltd. All rights reserved.
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