Long-term bond performance of GFRP bars in concrete under temperature ranging from 20 °C to 80 °C

被引：75
作者：
Masmoudi, Radhouane [1 ]
Masmoudi, Abdelmonem [2 ]
Ben Ouezdou, Mongi [2 ]
Daoud, Atef [2 ]
机构：
[1] Univ Sherbrooke, Dept Civil Engn, Fac Engn, Sherbrooke, PQ J1K 2R1, Canada
[2] Natl Engn Sch Tunis, Civil Engn Lab, Tunis, Tunisia
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2011年 / 25卷 / 02期
关键词：
Bond; Concrete; FRP bars; Pull-out testing; Bond-slip modelling; Temperature effect; FRP; BEHAVIOR;
D O I：
10.1016/j.conbuildmat.2009.12.040
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Eighty pull-out specimens were used to study the effect of temperature ranging from 20 degrees C to 80 degrees C in dry environment on bond properties between Glass Fiber Reinforced Polymer (GFRP) bars and concrete. The pullout-test specimens were subjected during 4 and 8 months to high temperatures up to 80 degrees C and then compared to untreated specimens (20 degrees C). Experimental results showed no significant reduction on bond strength for temperatures up to 60 degrees C. However, a maximum of 14% reduction of the bond strength was observed for 80 degrees C temperature after 8 months of thermal loading. For treated specimens, the coefficient beta in the CMR model, which predicts the bond-stress-displacement behavior, seems to be dependant with the temperature. (C) 2010 Elsevier Ltd. All rights reserved.
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页码：486 / 493
页数：8
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