RESEARCH ARTICLE


Effect of Coating Thickness on Bond Behaviors of Polymer Cement Coated Plain Steel Bar with Concrete and Finite Element Modeling



Xiong Yuanliang, Wang Kunrong, Liu Zhiyong* , Yang Zhengguang
School of Civil Engineering, Yantai University, Yantai, Shandong Province, China


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Creative Commons License
© Yuanliang et al.; Licensee Bentham Open

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the A415, School of Civil Engineering, Yantai University, No.32, Qingquan Road, Yantai, Shandong Province, China; Tel: 0086+13465352158; E-mail: lzy1698@163.com.


Abstract

The pullout tests were carried out to investigate the effect of coating thickness on bond behavior (failure modes, bond strength, bond stress slip curves) between hot rolled plain steel bar (HPB) coated with polymer cement based coating and concrete. The results indicated the failure mode of the specimens is pullout. Suitable coating thickness could enhance the bond strength of steel bar embedded with concrete. By using contact surfaces with cohesive behavior in finite element software, the slip between coated plain steel bar and concrete can be realized. The results of numerical simulation are close to that of experiments, indicating that the model using contact surfaces with cohesive behavior can reasonably predict the results of pullout tests of HPB in concrete.

Keywords: Cohesive behavior, Finite element modeling, Polymer cement based coating, Pullout tests.