Structural Engineering and Mechanics

  • 제26권4호
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  • Pages.427-439
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  • 2007
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Repair of precracked RC rectangular shear beams using CFRP strip technique

  • 투고 : 2005.08.10
  • 심사 : 2007.04.04
  • 발행 : 2007.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

The exploitation of fibre reinforced polymer composites, as external reinforcement is an evergreen and well-known technique for improving the structural performance of reinforced concrete structures. The demand to use FRP composites in the civil engineering industry is mainly due to its high strength, light weight, and stiffness. This paper exemplifies the shear strength of partially precracked reinforced concrete rectangular beams repaired with externally bonded Bi-Directional Carbon Fibre Reinforced Polymer (CFRP) Fabrics strips. All specimens were cast in the laboratory environment without any internal shear reinforcement. The test parameters were longitudinal tensile reinforcement, shear span to effective depth ratio, spacing of CFRP strips, and orientation of CFRP reinforcement. It mainly focuses on the shear capacity and modes of failure of the CFRP strengthened shear beams. Results have shown that the CFRP repaired beams attained a shear enhancement of 32% and 107.64% greater than the control beams. This study underscores that the CFRP strip technique significantly enhanced the shear capacity of precracked reinforced concrete rectangular beams without any internal shear reinforcement.

키워드

참고문헌

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피인용 문헌

  1. Embedded Connector in Severe Optimization of Steel Plate for Shear Strengthening of RC Beam: Experimental and Numerical Investigations vol.2018, pp.1687-8094, 2018, https://doi.org/10.1155/2018/4721431
  2. Finite element analysis of shear-deficient RC beams strengthened with CFRP strips/sheets vol.30, pp.2, 2008, https://doi.org/10.12989/sem.2008.30.2.247
  3. Experimental investigation on CFRP-to-concrete bonded joints across crack vol.35, pp.1, 2007, https://doi.org/10.12989/sem.2010.35.1.001
  4. U-Jacketing Applications of Fiber-Reinforced Polymers in Reinforced Concrete T-Beams against Shear-Tests and Design vol.8, pp.2, 2020, https://doi.org/10.3390/fib8020013