Bond behavior of GFRP-concrete under long-term exposure to aggressive environments

被引：0
|
作者：
Zheng Y. [1 ,2 ,3 ]
Ni M. [1 ,2 ,3 ]
Lu C. [1 ,2 ,3 ]
Chu T. [1 ,2 ,3 ]
Wu X. [1 ,2 ,3 ]
机构：
[1] Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang
[2] Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang
[3] Faculty of Civil Engineering and Mechanics Jiangsu University, Zhenjiang
来源：
Journal of Advanced Concrete Technology | 2021年 / 18卷 / 12期
基金：
中国国家自然科学基金;
关键词：
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 51878319 and 51578267) and the Jiangsu Planned Projects for Postdoctoral Research Funds (No. 2020Z350);
D O I：
10.3151/JACT.18.730
中图分类号：
学科分类号：
摘要：
The experimental results of the bond behavior between glass fiber reinforced polymer (GFRP) bars and concrete under several aggressive environments were studied. To give a comprehensive and comparative evaluation, a total 60 GFRP bar-concrete pullout specimens were divided into a control group and a treated group being immersed in tap water, alkaline and saline solutions for up to 270 days. The influences from aggressive environment, resin type and exposure period on the bond strength, together with the degradation mechanism and failure mode were explored. The time-dependent test results showed a clear decrease in the bond strength of treated group, with notably various degradation trends during different exposure periods. It is found that the saline solution induced the average bond strength loss of all corresponding specimens as 51.5% at 270 days, followed by alkaline solution (39.5%) and tap water (29.0%). © 2020 Japan Concrete Institute. All rights reserved.
引用
收藏
页码：730 / 742
页数：12
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