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Title |
Bond Capacity of Near-Surface-Mounted CFRP Plate to Concrete Under Various Temperatures
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Keywords |
탄소섬유판 ; 표면매입 보강 ; 내화성능 ; 온도변화 ; 인장시험 ; 부착성능 Carbon fiber polymer plate ; Near-surface-mounted retrofit ; Fire resistance ; Temperature variation ; Tensile test ; Bond test |
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Abstract |
This paper presents a series of test result in order to study fire resistance capacity of the Near-Surface-Mounted (NSM) Carbon Fiber Reinforced Polymer (CFRP) plate, which are tensile test of CFRP under various temperature loading, temperature loading test of epoxy and bond test of NSM CFRP to concrete under various temperature loading. From the tests, it was found that NSM retrofit method had high efficiency in strengthening concrete under ordinary temperature. However, the strength of the system was able to be drastically decreased even a little increase of surrounding temperature. Especially, bond capacity begins to disappear when the surrounding temperature approaches the glass transition temperature of epoxy. Therefore, it is necessary to improve the fire resistance capacity of both fiber reinforced polymer reinforcement and epoxy for bonding in order to develop safe fire resistance design of structure.
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