Modeling and Verification of Corrosion Expansion Crack in Reinforced Concrete

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zheng, Bowen^1

Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen

518000, China^1

关键词: Concrete cracks;    Corrosion expansion;    Corrosion products;    Crack width;    equivalent perimeter hypothesis;    Modeling and verifications;    Protective layers;    Rebar corrosion;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022058/pdf
DOI  :  10.1088/1755-1315/300/2/022058

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Rebar corrosion not only reduces the section of rebar, but also the volume expansion produced by corrosion will cause the protective layer to crack in advance, and produces corrosion expansion crack. In this paper, the corrosion expansion process of concrete was analyzed by the equivalent perimeter hypothesis, the width where corrosion products flow into crack in the corrosion process was considered, the relationship between existing joint displacement and corrosion rate was corrected, moreover, the relationship of corrosion expansion crack and corrosion time and corrosion rate was established, compared with the existing data and the rationality of the model is proved.