Effect of Corrosion Pit Position on Mechanical Properties of Corroded HRB400 Reinforced Bar

Author:

Li Hui1,Wu Xun1,Yue Jian Jun1

Affiliation:

1. Tongji University

Abstract

Corrosion of steel bars has become the primary cause for the concrete durability problem. Stress concentration due to uneven corrosion affect the mechanical properties of reinforced bar. This paper take HRB400 rebar for example to analyze the effect. FEM is conducted to analyze the effect of corrosion pit position on yield strength and ultimate strength. The result shows that corrosion pit in transverse rib has a different effect on yield strength and ultimate strength, while corrosion pit in longitudinal rib and reinforced column make yield strength and ultimate strength of reinforced bar decrease in varying degrees.

Publisher

Trans Tech Publications, Ltd.

Reference6 articles.

1. Gang Xu, Dong Zhong. Experiment research of reinforcement mechanics performance degradation due to pitting corrosion [J]. Water Resources and Power, 2012, 30(2): 86-89. (In Chinese).

2. Qiaopin Wang, Shengxing Wu. Experiment research of corrosion reinforcement mechanics performance [J]. Journal of zhejiang university: 2007, 41(1): 83-87. (In Chinese).

3. Yingfang Fan, Jing Zhou. Research of corrosion reinforcement mechanical properties with considering pit corrosion [J]. Journal of building materials, 2003, 6(3): 248-252. (In Chinese).

4. Code for design of concrete structures(GB 50010-2010), Beijing, 2010. (In Chinese).

5. Maslehuddin M, Allam I A, Al-Sulaimani G J, et al. Effect of rusting of reinforcing steel on its mechanical properties and bond with concrete[J]. ACI Materials Journal, 1990, 87(5): 496-502.

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