Effectiveness of frcm system in strengthening rc beams in shear using hybrid nse/eb technique
المؤلف | Ebead, Usama |
المؤلف | Wakjira, Tadesse |
تاريخ الإتاحة | 2023-01-29T09:23:40Z |
تاريخ النشر | 2018 |
اسم المنشور | Proceedings of International Structural Engineering and Construction |
المصدر | Scopus |
الملخص | This paper presents an experimental study on the efficacy of a recently introduced hybrid "near surface embedded/ externally bonded" NSE/EB fabric reinforced cementitious matrix (FRCM). Seven medium scale RC beams, deficient in shear, were constructed and tested under three-point loading. Six beams were strengthened using hybrid NSE/EB-FRCM technique and one beam was left un-strengthened as a reference. Two main test variables were considered; viz., strengthening configuration: full versus intermittent strengthening configuration and FRCM type: glass FRCM versus polyparaphenylene benzobisoxazole (PBO). The test results revealed that the hybrid NSE/EB-FRCM strengthening technique is effective in enhancing the shear capacity of the strengthened beams. The strengthened specimens showed an average of 67% higher shear capacity relative to the reference specimen. With regard to the FRCM type, G-FRCM strengthened specimens showed an average of 73% enhancement in the shear capacity, which was 12% higher than the value for PBOFRCM counterpart. Moreover, the strengthened beams showed higher deflection at the ultimate load than that of the reference specimen. Furthermore, the hybrid NSE/EBFRCM technique has shown to be a promising alternative to the conventionally used externally bonded FRCM system with the potential to reduce the debonding of FRCM from the concrete substrate. |
راعي المشروع | This paper was made possible by NPRP grant # NPRP 7-1720-2-641 from the Qatar National Research Fund (a member of Qatar Foundation). The findings achieved herein are solely the responsibility of the authors. |
اللغة | en |
الناشر | ISEC Press |
الموضوع | Fabric reinforced cementitious matrix (FRCM) Near surface embedded/externally bonded Rehabilitation Reinforce concrete (RC) beam |
النوع | Conference Paper |
رقم العدد | 1 |
رقم المجلد | 5 |
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