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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.20 No.6
- 발행연도
- 2016.1
- 수록면
- 1,275 - 1,303 (29page)
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초록· 키워드
오류제보하기
Steel plates and carbon-fiber-reinforced polymer (CFRP) laminates or plates bonded to concrete substrates have been widely used for concrete strengthening. However, this technique cause plate debonding, which makes the strengthening system inefficient. The main objective of this study is to enhance the bond strength of externally bonded steel plates and CFRP laminates to the concrete surface by proposing new embedded adhesive and steel connectors. The effects of these new embedded connectors were investigated through the tests on 36 prism specimens. Parameters such as interfacial shear stress, fracture energy and the maximum strains in plates were also determined in this study and compared with the maximum value of debonding stresses using a relevant failure criterion by means of pullout test. The study indicates that the interfacial bond strength between the externally bonded plates and concrete can be increased remarkably by using these connectors. The investigation verifies that steel connectors increase the shear bond strength by 48% compared to 38% for the adhesive connectors. Thus, steel connectors are more effective than adhesive connectors in increasing shear bond strength. Results also show that the use of double connectors significantly increases interfacial shear stress and decrease debonding failure. Finally, a new proposed formula is modified to predict the maximum bond strength of steel plates and CFRP laminates adhesively glued to concrete in the presence of the embedded connectors.
목차
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참고문헌 (32)
참고문헌 신청
2008 / ACI 440.2R, Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete / ACI Committee 440
Ali, M.M. / 2008 / Interfacial stress transfer of near surface-mounted FRP-to-concrete joints / Eng. Struct. 30(7):1861~1868
Sabahattin Aykac / 2012 / Strengthening of reinforced concrete beams with epoxy-bonded perforated steel plates / Structural Engineering and Mechanics, An Int＇l Journal 44(6):735~751
Bank, L.C. / 2007 / Analysis of RC beams strengthened with mechanically fastened FRP (MF-FRP) strips / Compos. Struct. 79(2):180~191
Barros, J.A. / 2007 / Efficacy of CFRP-based techniques for the flexural and shear strengthening of concrete beams / Cement Concrete Compos. 29(3):203~217
Ali, M.M. / 2008 / Interfacial stress transfer of near surface-mounted FRP-to-concrete joints / Eng. Struct. 30(7):1861~1868
Sabahattin Aykac / 2012 / Strengthening of reinforced concrete beams with epoxy-bonded perforated steel plates / Structural Engineering and Mechanics, An Int＇l Journal 44(6):735~751
Bank, L.C. / 2007 / Analysis of RC beams strengthened with mechanically fastened FRP (MF-FRP) strips / Compos. Struct. 79(2):180~191
Barros, J.A. / 2007 / Efficacy of CFRP-based techniques for the flexural and shear strengthening of concrete beams / Cement Concrete Compos. 29(3):203~217
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