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http://dx.doi.org/10.11112/jksmi.2011.15.1.067

Behavior of Reinforcement Ratio on Concrete Beams Reinforced with Lab Spliced GFRP Bar  

Choi, Yun Cheul (청운대학교 건축설비소방학과)
Park, Keum Sung (한국건설기술연구원)
Choi, Hyun Ki (한양대학교 건축환경공학과)
Choi, Chang Sik (한양대학교 건축공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.15, no.1, 2011 , pp. 67-76 More about this Journal
Abstract
The use of glass-fiber-reinforced polymer (GFRP) bars in reinforced concrete (RC) structures has emerged as an alternative to traditional RC due to the corrosion of steel in aggressive environments. Although the number of analytical and experimental studies on RC beams with GFRP reinforcement has increased in recent decades, it is still lower than the number of such studies related to steel RC structures. This paper presents the experimental moment deflection relations of GFRP reinforced beam which are spliced. Test variables were different reinforcement ratio and cover thickness of GFRP rebars. Seven concrete beams reinforced with steel GFRP re-Bars were tested. All the specimens had a span of 4000mm, provided with 12.7mm nominal diameter steel and GFRP rebars. All test specimens were tested under 2-point loads so that the spliced region be subject to constant moment. The experimental results show that the ultimate moment capacity of beam increasing of the reinforcement ratio. Failure mode of these specimens was sensitively vary according to the reinforcement ratio. The change of beam effective depth, which was caused by cover thickness variation, controlled the maximum strength and deflection because of cover spalling in tension face.
Keywords
GFRP Reinforcing bar; Concrete bar; Reinforcement ratio; Lab spliced; Flexural behavior;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
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