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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.19 No.1
- 발행연도
- 2017.1
- 수록면
- 79 - 85 (7page)
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This paper summarizes the experimental study of the shear behaviour of Hybrid Fibre Reinforced Concrete (HFRC) beams retrofitted by using externally bonded Glass Fibre Reinforced Polymer (GFRP) laminates. To attain the set-out objectives of the present investigation, steel fibre of 1% and polypropylene fibre of 0.30% was used for hybrid steel-polypropylene fibre reinforced concrete: whereas for hybrid glass-polypropylene fibre reinforced concrete, glass fibre by 0.03% and polypropylene fibre of 0.03% by volume of concrete was used. In this study, 9 numbers of beams were cast and tested into three groups (Group I, II & III). Each group containing 3 numbers of beams, out of which one serve as a control beam or a hybrid steel-polypropylene fibre reinforced concrete beam or a hybrid glass - polypropylene fibre reinforced concrete beam and the remaining two beams were preloaded until shear cracks appeared up to 75% of ultimate load and then preloaded beams (damaged beams) were retrofitted with GFRP laminates at shear zone in the form of strips, as one beam in vertical position and another beam in inclined position to restrict the shear cracks. Finally, the retrofitted beams were loaded until failure and test results were compared. The experimental tests have been conducted to investigate various parameters of structural performance, such as load carrying capacity, crack pattern and failure modes, load-deflection responses and ductility relations. The test results revealed that beams retrofitted using GFRP laminates considerably increased the load carrying capacity. In addition, it was found that beams retrofitted with inclined strip offers superior performance than vertical one. Comparing the test results, it was observed that hybrid steel-polypropylene fibre reinforced concrete beam retrofitted with GFRP laminates showed enhanced behaviour as compared to other tested beams.
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참고문헌 (24)
참고문헌 신청
Jaber, M. S. A. / 2007 / Jordan journal of civil engineering 1(4):327~335
ACI Committee 440 / 2008 / Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures / ACI 440.2R-08, American Concrete Institute
ACI Committee 544 / 2002 / State-of-the-art report on fiber reinforced concrete / ACI 5441, R-96 :1~66
Standard specification for chemical admixtures for concrete / ASTM C494 Type F
Attari, N. / 2012 / Flexural strengthening of concrete beams using CFRP, GFRP and hybrid FRP sheets / Cement Build. Mater. 37:746~757
ACI Committee 440 / 2008 / Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures / ACI 440.2R-08, American Concrete Institute
ACI Committee 544 / 2002 / State-of-the-art report on fiber reinforced concrete / ACI 5441, R-96 :1~66
Standard specification for chemical admixtures for concrete / ASTM C494 Type F
Attari, N. / 2012 / Flexural strengthening of concrete beams using CFRP, GFRP and hybrid FRP sheets / Cement Build. Mater. 37:746~757
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