A simplified probabilistic model for the combined action of carbonation and chloride ingress

被引：8
|
作者：
Zhu, Xingji [1 ]
Zi, Goangseup [2 ,3 ]
Sun, Lianfang [2 ]
You, Ilhwan [2 ]
机构：
[1] Harbin Inst Technol Weihai, Dept Civil Engn, Weihai, Peoples R China
[2] Korea Univ, Sch Civil Environm & Architectural Engn, Seoul, South Korea
[3] China Univ Petr East China, Coll Pipeline & Civil Engn, Qingdao, Peoples R China
来源：
MAGAZINE OF CONCRETE RESEARCH | 2019年 / 71卷 / 07期
基金：
中国国家自然科学基金;
关键词：
carbonation; cement; cementitious materials; durability-related properties; TIME-DEPENDENT RELIABILITY; STEEL CORROSION; REINFORCEMENT CORROSION; SERVICE-LIFE; CONCRETE CARBONATION; INITIATION TIME; RC STRUCTURES; PENETRATION; DIFFUSION; DURABILITY;
D O I：
10.1680/jmacr.18.00140
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents an improved numerical model for the reliability analysis of corrosion initiation due to the combined action of carbonation and chloride ingress. The coupled mechanism of carbon dioxide, chloride ions, heat and moisture is considered in the model. The probability of corrosion initiation is evaluated by means of a single limit state function in which the critical concentration of chloride ions depends on the degree of carbonation. In addition, the coupled diffusion coefficients are interpolated linearly depending on the degree of carbonation in order to simplify the structure of the model without compromising accuracy.
引用
收藏
页码：327 / 340
页数：14
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