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Title |
Bond Properties of CFRP Rebar in Fiber Reinforced High Strength Concrete with Surface Treatment Methods of Reinforcing Fibers
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Keywords |
고강도콘크리트 ; 부착특성 ; CFRP 보강근 ; 보강섬유 ; 상대부착강도 high strength concrete ; bond property ; CFRP rebar ; reinforcing fiber ; relative bond strength |
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Abstract |
The effects of surface treatment method of reinforcing fiber on the bonding strength between carbon fiber reinforced polymer rebar (CFRP rebar) and high strength concrete have been evaluated in this study. The structural PVA fiber is coated with a proprietary hydrophobicoiling agent and crimped type polyolefin based structural synthetic fiber is deformed with a geometrical modification were used for the reinforcing fiber. The compressive tests have been performed to evaluate the strength property of high strength concrete depending on the surface treatment method of fiber. The bonding property between the high strength concrete and the CFRP rebar was evaluated by means of direct bonding test. The test results indicated that the surface treatment method of fiber effect on the bonding behavior of high strength concrete and CFRP rebar. Also, as the development and propagation of splitting cracks were controled by adding fibers into the high strength concrete, the bonding behavior, bond strength and relative bonding strength of CFRP rebar and high strength concrete were significantly improved.
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