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    Impact Behavior of FRP-Strengthened RC Beams without Stirrups

    Source: Journal of Composites for Construction:;2016:;Volume ( 020 ):;issue: 004
    Author:
    Thong M. Pham
    ,
    Hong Hao
    DOI: 10.1061/(ASCE)CC.1943-5614.0000671
    Publisher: American Society of Civil Engineers
    Abstract: This study investigates the impact behavior of fiber-reinforced polymer (FRP)-strengthened reinforced concrete (RC) beams and FRP contribution to shear strength. Thirteen RC beams (1,500×150×250  mm) were tested against static and impact loads. The beams were strengthened with FRP U-wraps and 45°-angle wraps to investigate the effectiveness of different wrapping schemes. The experimental results show that the debonding strain of FRP under impact loads is slightly smaller than that under static loads. The FRP contribution to shear strength is discussed and verified against a design code. In terms of using the same amount of FRP, 45°-angle FRP wraps provide better performance than the FRP U-wraps in terms of both the load capacity and displacement. Fully wrapping a RC beam with FRP is more efficient than wrapping distributed FRP strips. The impact behavior and failure modes of FRP strengthened RC beams are also discussed.
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      Impact Behavior of FRP-Strengthened RC Beams without Stirrups

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    contributor authorThong M. Pham
    contributor authorHong Hao
    date accessioned2017-12-30T13:04:38Z
    date available2017-12-30T13:04:38Z
    date issued2016
    identifier other%28ASCE%29CC.1943-5614.0000671.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4245356
    description abstractThis study investigates the impact behavior of fiber-reinforced polymer (FRP)-strengthened reinforced concrete (RC) beams and FRP contribution to shear strength. Thirteen RC beams (1,500×150×250  mm) were tested against static and impact loads. The beams were strengthened with FRP U-wraps and 45°-angle wraps to investigate the effectiveness of different wrapping schemes. The experimental results show that the debonding strain of FRP under impact loads is slightly smaller than that under static loads. The FRP contribution to shear strength is discussed and verified against a design code. In terms of using the same amount of FRP, 45°-angle FRP wraps provide better performance than the FRP U-wraps in terms of both the load capacity and displacement. Fully wrapping a RC beam with FRP is more efficient than wrapping distributed FRP strips. The impact behavior and failure modes of FRP strengthened RC beams are also discussed.
    publisherAmerican Society of Civil Engineers
    titleImpact Behavior of FRP-Strengthened RC Beams without Stirrups
    typeJournal Paper
    journal volume20
    journal issue4
    journal titleJournal of Composites for Construction
    identifier doi10.1061/(ASCE)CC.1943-5614.0000671
    page04016011
    treeJournal of Composites for Construction:;2016:;Volume ( 020 ):;issue: 004
    contenttypeFulltext
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