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한국콘크리트학회|IJCSM 2022년 5월

논문명 Experimental Investigation on Flexural Capacity of Reinforced Concrete Beams Strengthened with 3D-Fiberglass, CFRP and GFRP
저자명 (Mahdi Vahidpour) ; (Ali Kheyroddin) ; (Mahdi Kioumarsi)
발행사 한국콘크리트학회
수록사항 IJCSM, Vol.16 No.3 (2022-05)
페이지 시작페이지(303) 총페이지(20)
ISSN 1976-0485
주제분류 재료 / 구조
주제어 ; fiber-reinforced polymers sheets; reinforced concrete; carbon FRP; glass FRP; 3D-fiberglass; flexural capacity
요약2 The main objective of this study is to investigate the structural performance of reinforced concrete (RC) beam specimens strengthened with 3D-fiberglass as compared with fiber-reinforced polymers (FRP) sheets. For this purpose, six RC beams were fabricated, strengthened, and tested under a four-point bending machine. One of the beams served as the control beam (REF), while the others were strengthened with carbon FRP (RCFRP), glass FRP (RGFRP), 3D-fiberglass and epoxy resin (R3DTR), 3D-fiberglass and epoxy resin extended to the sides (R3DTRB), and 3D-fiberglass and concrete repair (R3DTG). Failure mode, crack development, flexural capacity, ductility, the effectiveness of wrapping configurations, and the performance of epoxy resin in comparison with concrete repairer were studied between various beams. The results attest to the better performance and effectiveness of 3D-fiberglass over FRP in terms of flexural capacity, crack pattern, and ductility. The R3DTR and RGFRP specimens, compared to the control specimen, had the highest and lowest flexural capacity growth, with 19% and 8.4%, respectively. In addition, the failure modes observed in this study were in good agreement with the failure modes present in ACI.440.2R-17. Moreover, finite element (FE) models were proposed to predict the residual capacity of the specimens strengthened with FRP, using Abaqus software.
소장처 한국콘크리트학회
언어 영어
DOI https://doi.org/10.1186/s40069-022-00508-w