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Title |
Capacity Evaluation of High Strength SFRC Beams according to Shear Span to Depth Ratio
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Keywords |
강섬유 ; 전단경간비 ; 고강도 ; 전단보강근비 ; 체적비 Steel fiber ; Shear span to depth ratio ; High strength ; Shear reinforcement ratio ; Volume fraction |
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Abstract |
The purpose of this study is to evaluate the shear strengthening effect of steel fiber in high strength SFRC beams. For this purpose, 13th specimens are prepared and structural tests are performed. Testing variables are shear span to depth ratio, steel fiber volume fraction, shear strengthening ratio in 60 MPa SFRC concrete. From the reviewing of previous researches and analyzing of material and member test results, shear span to depth ratio 2.5 and steel fiber volume fraction 1.0% can be having a maximum strengthening effect in steel fiber. Proposed shear strength estimation equation, which is considering steel fiber strengthening and shear span to depth ratio effect, underestimate the shear capacity of high strength SFRC beams. Therefore a detailed research on strength characteristics of high strength SFRC beams are needed.
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