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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.32 No.5
- 발행연도
- 2019.1
- 수록면
- 559 - 569 (11page)
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초록· 키워드
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The bond strength between composite laminates and concrete is a key factor that controls the behavior of concrete members strengthened with fiber reinforced polymer (FRP) sheets, which can be affected by several parameters such as thermal stresses and surface preparation. This article presents the result of an experimental study on the bond strength between FRP sheets and concrete at ambient temperature after specimens had been exposed to elevated temperatures of up to 200°C. For this purpose, 30 specimens of plain concrete with dimensions of 150×150×350 mm were prepared. Three different conventional surface preparation methods (sandblasting, wire brushing and hole drilling) were considered and compared with a new efficient method (fiber implantation). Deformation field during each experiment was monitored using particle image velocimetry. The results showed that, the specimens which were prepared by conventional surface preparation methods, preserved their bond integrity when exposed to temperature below glass transition temperature of epoxy resin (about 60°C). Beyond this temperature, the bond strength and stiffness decreased significantly (about 50%) in comparison with control specimens. However, the specimens prepared by the proposed method displayed higher bond strengths of up to 32% and 90% at 25°C and 200°C, respectively.
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참고문헌 (35)
참고문헌 신청
Adrian, R. J. / 1991 / Particle-imaging techniques for experimental fluid mechanics / Annual Rev. Fluid Mech 23(1):261~304
Ali-Ahmad, M. / 2006 / Experimental investigation and fracture analysis of debonding between concrete and FRP sheets / J. Eng. Mech 132(9):914~923
Al-Salloum, Y. A. / 2011 / Behavior of FRP-confined concrete after high temperature exposure / Constr. Build. Mater 25(2):838~850
2000 / ASTM D3039M-00, Standard test method for tensile properties of polymer matrix composite materials
Barros, J. A. O. / 2005 / Flexural strengthening of concrete beams with CFRP laminates bonded into slits / Cement Concrete Compos 27(4):471~480
Ali-Ahmad, M. / 2006 / Experimental investigation and fracture analysis of debonding between concrete and FRP sheets / J. Eng. Mech 132(9):914~923
Al-Salloum, Y. A. / 2011 / Behavior of FRP-confined concrete after high temperature exposure / Constr. Build. Mater 25(2):838~850
2000 / ASTM D3039M-00, Standard test method for tensile properties of polymer matrix composite materials
Barros, J. A. O. / 2005 / Flexural strengthening of concrete beams with CFRP laminates bonded into slits / Cement Concrete Compos 27(4):471~480
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