Probabilistic evaluation of initiation time of chloride-induced corrosion

被引：164

作者：

Val, Dimitri V. ^{[1
]}

Trapper, Pavel A. ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Fac Civil & Environm Engn, Dept Struct Engn & Construct Management, IL-32000 Haifa, Israel

来源：

RELIABILITY ENGINEERING & SYSTEM SAFETY | 2008年 / 93卷 / 03期

关键词：

concrete; reinforced; chlorides; corrosion; probabilistic models;

D O I：

10.1016/j.ress.2006.12.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper presents a model for chloride ingress into concrete. The model accounts for two mechanisms which control the chloride ingress-diffusion and convection. Using one-dimensional (1-D) formulation of the model, the influence of chloride binding and ambient humidity on chloride ingress into concrete has been investigated. Based on results of this investigation parameters for probabilistic analysis have been selected. Probabilistic evaluation of the time to corrosion initiation has then been carried out for a reinforced concrete (RC) wall (1-D problem) and a RC column (2-D problem) in a marine environment. Results of the analysis show that for the same thickness of the concrete cover the probability of corrosion initiation in the corner reinforcing bars of the RC column is much higher than in reinforcing bars in the middle part of the RC wall. The results demonstrate the importance of 2-D modelling for correct prediction of corrosion initiation in such RC elements as columns and beams. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：364 / 372

页数：9

共 34 条

[1] Chloride penetration in nonsaturated concrete [J].