Effect of aging on bond of GFRP bars embedded in concrete

被引：104

作者：

Robert, Mathieu ^{[1
]}

Benmokrane, Brahim ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Civil Engn, Sherbrooke, PQ J1K 2R1, Canada

来源：

CEMENT & CONCRETE COMPOSITES | 2010年 / 32卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Durability; FRP; Glass; Aging; Interface; Bond strength; Mechanical properties; Microstructure; REINFORCED POLYMER BARS; STRENGTH CONCRETE; DURABILITY; PERFORMANCE; DEGRADATION; TESTS;

D O I：

10.1016/j.cemconcomp.2010.02.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents an experimental investigation of the durability of the bond between GFRP bars and concrete, specifically as it relates to degradation of the GFRP-bar surface and behavior of the bar-concrete interface. The GFRP bars were embedded in concrete and exposed to tap water at 23 C, 40 C, and 50 C to accelerate potential degradation. The bond strengths before and after exposure were considered as a measure of the durability of the bond between the GFRP bars and concrete. In addition, Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM) were used to characterize how bar aging affected the bond between the GFRP bars and the concrete. The results showed that aging did not significantly affect the durability of the bar-concrete interface under the conditions used in this study. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：461 / 467

页数：7

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