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Coupling effects of influence factors on probability of corrosion initiation time of reinforced concrete

ISSN号：1002-3550
期刊名称：《混凝土》
时间：0
分类：TQ323.8[化学工程—合成树脂塑料工业] TG17[金属学及工艺—金属表面处理;金属学及工艺—金属学]
作者机构：[1]College of Civil Engineering, Shenzhen Municipal Key Laboratory for Durability of Civil Engineering Structure, Shenzhen University, Shenzhen 518060, China, [2]Department of Architecture and Building Engineering, Kanagawa University, Yokohama 2218686, Japan, [3]School of Civil Engineering and Architecture, Central South University, Changsha 410075, China
相关基金：Foundation item： Project（50925829） supported by the National Science Fund for Distinguished Young Scholars of China; Project（50908148） supported by the National Natural Science Foundation of China; Projects（2009-K4-23, 2010-11-33） supported by the Research of Ministry of Housing

作者： ZHANG Xiao-gang[1], ZHAO Yan-gang[2], XING Feng[1], LU Zhao-hui[3]

关键词：钢筋混凝土腐蚀, 影响因素, 概率分布, 起始时间, 耦合作用, 环境相对湿度, 氯离子浓度, 氯离子扩散系数, reinforced concrete, corrosion initiation time, coupling influence model, influence factors, natural exposure data, probability distribution

中文摘要：

象在水泥影响氯化物散开过程的环境相对湿度，导致负担的裂缝和压力状态那样的主要影响因素的联合模型被讨论。批评氯化物集中 C C，氯化物散开系数 D，和表面氯化物集中 C 的概率分布 s 被决定基于收集了自然暴露数据。并且就影响因素的联合效果而言的腐蚀开始的概率的评价被介绍。相对湿度和治好的时间是在 10 年暴露时间前后影响腐蚀开始的概率的最有效的因素，这被发现。在一样的暴露时间，腐蚀开始的概率上的导致负担的快克和压力状态的影响是明显的，在哪个快克的效果是大多数那。

英文摘要：

The coupling model of major influence factors such state affecting the chloride diffusion process in concrete is as environmental relative humidity, load-induced crack and stress discussed. The probability distributions of the critical chloride concentration Cc, the chloride diffusion coefficient D, and the surface chloride concentration Cs were determined based on the collected natural exposure data. And the estimation of probability of corrosion initiation considering the coupling effects of influence factors is presented. It is found that the relative humidity and curing time are the most effective factors affecting the probability of corrosion initiation before and after 10 years of exposure time. At the same exposure time, the influence of load-induced crack and stress state on the probability of corrosion initiation is obvious, in which the effect of crack is the most one

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