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Experimental Verification of Reinforced Concrete Beam with FRP Rebar  

Oh, Hong Seob (국립진주산업대학교 토목공학과)
Ahn, Kwan-Yeol (남해전문대학)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.12, no.3, 2008 , pp. 93-100 More about this Journal
Abstract
The use of fiber reinforced polymer (FRP) composites is significantly growing in construction and infrastructure applications where durability under harsh environmental conditions is of great concern. In order to examine the applicability of FRP rebar as a reinforcement in flexural member, flexural tests were conducted. 12 beams with different FRP materials such as CFRP, GFRP and Hybrid FRP and reinforcement ratio were tested and analyzed in terms of failure mode, moment-deflection, flexural capacity, ductility index and sectional strain distribution. The test results were also compared with the theoretical model represented in ACI 440.1R06. Test results indicate that the flexural capacity of the beams reinforced by FRP bars can be accurately predicted using the ultimate design theory. They also show that the current ACI model for computing the deflection overestimates the actual deflection of GFRP series and underestimates the deflection of CFRP series.
Keywords
Ductility index; Failure modes; Fiber reinforced polymer; Flexural capacity; Moment-deflection; FRP;
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