Effects of harsh environmental exposures on the bond capacity between concrete and GFRP reinforcing bars

被引：29
|
作者：
Al-Tamimi, Adil [1 ]
Abed, Farid H. [1 ]
Al-Rahmani, Abdulla [1 ]
机构：
[1] Amer Univ Sharjah, Dept Civil Engn, POB 26666, Sharjah, U Arab Emirates
来源：
ADVANCES IN CONCRETE CONSTRUCTION | 2014年 / 2卷 / 01期
关键词：
bond; GFRP; pullout; shear; exposure; sea water;
D O I：
10.12989/acc.2014.2.1.001
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper demonstrates an experimental study to evaluate the effects of environmental exposures on the bond between ribbed Glass Fiber Reinforced Polymer (GFRP) reinforcing bars and concrete. The equation recommended by ACI 440-1R-06, for the bond stress, was evaluated in this study. A total of 16 pullout samples, 12with GFRP bars and 4with steel bars, were exposed to two different harsh environments for different periods of time. The exposed harsh environments included direct sun exposure and cyclic splash zone sea water. The variation in the shear (bond) strengths before and after exposure was considered as a measure of the durability of the bond between GFRP bars and concrete. Experimental results showed there is no significant difference of the bond strength between 60 and 90 days of exposures. It also showed that the empirical equation of the bond stress calculated by ACI 440-IR-06 is very conservative.
引用
收藏
页码：1 / 11
页数：11
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