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Title |
A Study on the Shear Behavior of Recycled Aggregate Reinforced Concrete Beams without Stirrups
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Authors |
이정훈 ; 김우석 ; 백승민 ; 강현구 ; 곽윤근 |
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DOI |
https://doi.org/10.4334/JKCI.2013.25.4.389 |
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Keywords |
순환골재 콘크리트 ; 건설 폐기물 ; 재활용 ; 전단강도 recycled concrete aggregate(RCA) ; construction waste ; recycling ; shear strength |
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Abstract |
Little investigations have been carried out to study the shear behaviors of RC beams with recycled aggregates. So, this experiment investigates the shear performance and suggests the possible application of Recycled Concrete Aggregate (RCA) for building structures. In general, shear strength of reinforced concrete beam without stirrups is dependent on the compressive strength of concrete, the longitudinal steel ratio, and the shear span-to-depth ratio. In this study, total 28 recycled aggregate concrete beams without shear reinforcement were tested by two-point load and all beams were singly reinforced. The variables studied in this investigation are shear span-to-depth ratios (a/d=2, 3 and 4), RCA replacement ratios (0, 15, 30 and 50%) and longitudinal steel ratios (0.80, 1.27 and 1.84%). The designed concrete compressive strength with a 30 MPa is used. This research will play an important role toward the establishment of the structural design standard for RCA concrete.
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