Chloride-induced corrosion modelling of cracked reinforced SHCC

被引：0
|
作者：
Suvash C. Paul
Gideon P. A. G. van Zijl
机构：
[1] Nanyang Technological University,Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering
[2] Stellenbosch University,Department of Civil Engineering
来源：
Archives of Civil and Mechanical Engineering | 2016年 / 16卷
关键词：
Chloride; Cracks; Corrosion modelling; Pitting depth; Strain hardening cement-based; composite (SHCC);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Corrosion of steel bars in concrete is usually a slow electrochemical process which may need a long time before damage becomes visible in the reinforced concrete (RC). However, cracks provide quick access to chloride, oxygen and water into concrete and accelerate the corrosion process. Corrosion modelling is essential for structural design for a particular life span, or to inform decisions on repair of RC structures toreach or extend their service life. This paper reports experimental research results of accelerated chloride exposure of cracked reinforced strain hardening cement-based composite (R/SHCC) specimens for a period of one year. Based on these novel results, a corrosion model is proposed which incorporates crack width, crack spacing, free chloride content and cover depth. The model is shown to capture the corrosion results of cracked R/SHCC reported in this paper.
引用
收藏
页码：734 / 742
页数：8
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