Table of Contents Author Guidelines Submit a Manuscript
International Journal of Polymer Science
Volume 2017 (2017), Article ID 5156189, 9 pages
https://doi.org/10.1155/2017/5156189
Research Article

Bond-Slip Behavior of Basalt Fiber Reinforced Polymer Bar in Concrete Subjected to Simulated Marine Environment: Effects of BFRP Bar Size, Corrosion Age, and Concrete Strength

1School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
2Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510635, China

Correspondence should be addressed to Qijun Yu

Received 23 September 2016; Revised 7 January 2017; Accepted 22 February 2017; Published 26 March 2017

Academic Editor: Baolin Wan

Copyright © 2017 Yongmin Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Basalt Fiber Reinforced Polymer (BFRP) bars have bright potential application in concrete structures subjected to marine environment due to their superior corrosion resistance. Available literatures mainly focused on the mechanical properties of BFRP concrete structures, while the bond-slip behavior of BFRP bars, which is a key factor influencing the safety and service life of ocean concrete structures, has not been clarified yet. In this paper, effects of BFRP bars size, corrosion age, and concrete strength on the bond-slip behavior of BFRP bars in concrete cured in artificial seawater were investigated, and then an improved Bertero, Popov, and Eligehausen (BPE) model was employed to describe the bond-slip behavior of BFRP bars in concrete. The results indicated that the maximum bond stress and corresponding slip decreased gradually with the increase of corrosion age and size of BFRP bars, and ultimate slip also decreased sharply. The ascending segment of bond-slip curve tends to be more rigid and the descending segment tends to be softer after corrosion. A horizontal end in bond-slip curve indicates that the friction between BFRP bars and concrete decreased sharply.