Nonlinear numerical simulation of bond performance between recycled concrete and corroded steel bars

Author:

Li Zhenfang1,Gao Dong1,Wu Chuanji1,Lv Guoqing1,Liu Xin1,Zhai Haoran1,Huang Zhanfang2

Affiliation:

1. Shandong Hi-speed Urban & Rural Development Group CO., LTD , Jinan , Shandong, 250014 , China

2. School of Civil and Architectural Engineering, Shandong University of Technology , Zibo , Shangdong, 255000 , China

Abstract

Abstract In this article, the bond performance between recycled concrete and corroded steel bars is analyzed by the nonlinear numerical simulation. The result shows that the maximum bond strength between recycled concrete and steel bar decreases with the increase in steel bar corrosion rate; when the recycled concrete strength is large, the simulated maximum bond strength is in good agreement with the experimental maximum bond strength; when the recycled concrete strength is small, the simulated maximum bond strength is in relatively poor agreement with the experimental maximum bond strength, but there is still an error within the allowable range; the slip between recycled concrete and steel bar increases with the increase in steel bar corrosion rate; when the steel bar corrosion rate exceeded 5%, the bond strength decreases more rapidly; the maximum bond strength increases with the increase in specimen sizes under the same steel bar corrosion rate; the maximum bond strength decreases with the increase in steel bar diameter under the same steel bar corrosion rate.

Publisher

Walter de Gruyter GmbH

Subject

Computer Networks and Communications,General Engineering,Modeling and Simulation,General Chemical Engineering

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