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Title |
Behavior of FRP-Concrete Composite Decks with the Mechanical Connection
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Authors |
김성태 ; 박성용 ; 조정래 ; 김병석 ; 조근희 |
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Keywords |
콘크리트 ; FRP ; 합성 바닥판 ; 기계적 합성 ; 규사코팅 ; concrete ; FRP ; composite deck ; mechanical connection ; coarse sand coating |
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Abstract |
FRP-concrete composite deck, an innovative system, is composed of concrete in the top and FRP panel in the bottom. Bottom FRP panel can reduce self weight and improve workability. This system requires strong connection between FRP and concrete. Therefore coarse sand coating was previously applied on FRP to improve the bonding. In this study, concrete wedge method is newly introduced to enhance both vertical bond and fatigue performance. Three FRP-concrete composite deck specimens with the concrete wedges were manufactured, and static and fatigue tests were carried out. The results showed that the new FRPconcrete composite deck satisfied deflection and crack width limits set by the design codes. And the fatigue test showed that the composite deck was capable of two million load cycles under 50% of its static strength. Based on the results, it can be concluded that that this new system has outstanding mechanical and durability performance, and therefore, satisfactorily be used in designing FRP-concrete composite deck.
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