탄소섬유보강판의 홈삽입에 따른 철근콘크리트 보의 보강효과 = Strengthening Effects of RC Beam with Slot-Bonded CFRP Plate

다국어 초록 (Multilingual Abstract)

This paper presents a feasibility study of an alternative strengthening method by slot-bonded CFRP plates for reinforced concrete beam. A total 14 reinforced concrete beam were constructed, tested and the response of the beams in terms of deflection, strains, failure load and failure mode were examined. Each specimen was initially loaded for 75% of ultimate load, cracked specimen were strengthened with CFRP plate and then tested until complete failure. Test variables included the strengthening method, steel ratio and strengthening length, and the effects according to each test variables are analysed. The experimental results show that proposed methods can increase the flexural strength and stiffness of the beam significantly. Also, the failure of the specimens strengthened by the proposed method are more ductile than externally bonded specimen.