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نهمین کنگره بین المللی مهندسی عمران
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  • performance of externally bonded reinforcement in grooves (ebrig) method for flexural strengthening of rc beams

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    • تاریخ ارائه: 1390/11/15
    • تاریخ انتشار در تی پی بین: 1390/11/15
    • تعداد بازدید: 732
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     one of the most prominent challenges of flexural strengthening of beams using fiber reinforced polymer (frp) composites, is the premature debonding of frp laminate from concrete substrate, which makes the strengthening calculations less reliable. the new externally bonded reinforcement in grooves (ebrig) method, being recently developed at isfahan university of technology (iut), has yielded completely satisfactory results in postponing premature debonding of frp laminates in concrete beam specimens without internal flexural bars. in the current study, the performance of ebrig method in reinforced concrete beams has been evaluated. to reach the aforementioned purpose, five reinforced beam specimens with dimensions of 120×140×1000 mm were cast and externally strengthened with the conventional externally bonded reinforcement (ebr) and new ebrig methods. beams were then subjected to four-point flexural loading. as a means of comparison, one reinforced beam without any external strengthening was also tested. the experimental results showed a significant increase in the failure load of the beam strengthened with multi frp layers using ebirg method.

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