Experimental study of the bond performance and mechanical response of GFRP reinforced concrete

被引：33

作者：

Gu, Xingyu ^{[1
]}

Yu, Bin ^{[1
]}

Wu, Ming ^{[2
]}

机构：

[1] Southeast Univ, Sch Transportat, Nanjing 210096, Jiangsu, Peoples R China

[2] Highway Adm Bur Zhejiang Prov, Meihuabei 4, Hangzhou 310009, Zhejiang, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 114卷

基金：

中国国家自然科学基金;

关键词：

GFRP bar; Bond performance; Concrete beam; Bearing capacity; Crack control; SERVICE LIFE PREDICTION; BEHAVIOR; REBAR; BEAMS; SLABS;

D O I：

10.1016/j.conbuildmat.2016.03.211

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study carried out laboratory investigations of mechanical behaviors of glass fiber reinforced polymer (GFRP) concrete and consisted of three test programs. It first obtained elastic parameters of GFRP bar and then conducted pull-out test to evaluate the bond performance of GFRP/steel bar with concrete. The test variables involved diameter, thread depth, thread width, embedment length of GFRP bar and cement strength, a total of 32 combinations. Test results indicate the optimum GFRP bar is with thread gap of 0.8-diameter, thread depth of 1 mm, and in favor of small diameter size. The GFRP reinforced specimens provide approximately 60% of bond strength benchmarked by the steel reinforced specimens but have much higher slip length. Lastly, four-point bending test was applied to five types of GFRP/steel reinforced concrete beams to investigate the mechanical responses of the beams until failure. Test results indicate at the same reinforcement ratio and geometric size, GFRP bar and steel bar have the same bearing capacities. However, the former is inferior to the latter in terms of crack control. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：407 / 415

页数：9

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