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Title |
Structural Performance Evaluation of Steel Fiber-Reinforced Concrete Beams with Recycled Coarse Aggregates
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Authors |
신재린(Jae-Lin Shin) ; 김우석(Woo-Suk Kim) ; 백승민(Seung-Min Baek) ; 강현구(Thomas H.-K. Kang) ; 곽윤근(Yoon-Keun Kwak) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2015.27.3.215 |
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Keywords |
순환골재 콘크리트 ; 건설 폐기물 ; 전단강도 ; 전단경간비 ; 강섬유혼입율 recycled coarse aggregate ; construction waste ; shear strength ; shear span-to-depth ratio ; steel fiber volume fraction |
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Abstract |
In this study, twenty four steel-fiber reinforced concrete (SFRC) beams using recycled coarse aggregates (RCA) were manufactured to examine the shear behavior of SFRC and to determine the beams' ultimate shear strengths. The RCA replacement ratio was fixed at 30%. The variables studied in this investigation are: (1) shear span-to-depth ratios (a/d) of 2, 3 and 4; (2) longitudinal reinforcement ratio (ρ) of 0.008 and 0.0127; and (3) steel fiber volume fractions (Vf) of 0, 0.5, 0.75 and 1%. Test results were analyzed and then compared with the findings and proposals of various other researchers. Based on the test results, the more steel fiber volume fraction is increased, the large crack resistance and shear strength are exhibited. Most of the experimental data is higher than the theoretical value. Therefore, steel-fiber reinforced concrete beams using recycled coarse aggregates are suggested to be applied for building structures.
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