Path probability model of corrosion-crack assessment for existing reinforced concrete structures

被引：6
|
作者：
Wang X.-Z. [1 ,2 ]
Jin W.-L. [1 ]
Yan Y.-D. [1 ]
机构：
[1] Institute of Structural Engineering, Zhejiang University
[2] Hanjia Design Group Co., Ltd.
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2010年 / 44卷 / 06期
关键词：
Chloride-penetration; Corrosion-crack; Path probability model (PPM); Reinforced concrete bridge;
D O I：
10.3785/j.issn.1008-973X.2010.06.026
中图分类号：
学科分类号：
摘要：
For the status that corrosion of reinforcement, indetectable corrosion degree and corrosion-induced crack of existing concrete structures in chloride-laden environment, a path probability model (PPM) to predict the stochastic corrosion-crack development of reinforced concrete (RC) structures with time was proposed. The time-dependent probability distribution of steel corrosion ratio, crack width of concrete due to corrosion and percentage of corroded steel samples of elements were estimated effectively on a series of random paths of corrosion-crack process simulated by computer programme. The substructure of an RC bridge in chloride-laden environment was illustrated to verify the precise and effectiveness of the present model by the assessment result of field inspection data. The model can effectively predict the durability behavior of existing concrete structures and the predicted result is a reasonable proof for optimal strategies of maintenance and repair.
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页码：1191 / 1196
页数：5
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