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Title |
Shear Strength of Steel Fiber Concrete - Plain Concrete Composite Beams
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Authors |
김철구(Chul-Goo Kim) ; 박홍근(Hong-Gun Park) ; 홍건호(Geon-Ho Hong) ; 강수민(Su-Min Kang) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2015.27.5.501 |
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Keywords |
전단 강도 ; 강섬유 ; 합성보 ; 복합 공법 ; 수평전단 shear strength ; steel fiber ; composite beam ; composite construction ; horizontal shear |
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Abstract |
Composite construction of precast concrete and cast-in-place concrete is currently used for the modular construction. In this case, the use of steel fiber reinforced concrete (SFRC) could be beneficial for precast concrete. However, the shear strength of such composite members (SFRC and cast-in-place concrete) is not clearly defined in current design codes. In the present study, steel fiber composite beam tests were conducted to evaluate the effect of steel fibers on the composite members. The test variables are the area ratio of SFRC and shear reinforcement ratio. The test results showed that when minimum horizontal shear reinforcement was used, the shear strength of composite beams increased in proportion to the area ratio of steel fiber reinforced concrete. However, because of the steel fiber, the composite beams were susceptible to horizontal shear failure. Thus, minimum horizontal shear reinforcement is required for SFRC composite beams.
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