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Title |
Shear Performance Evaluation of the Joint between Hollow Core Slabs
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Keywords |
할로우 코어 슬래브 ; 토핑콘크리트 ; 면내전단 ; 면외전단 ; 다이어프램 Hollow core slab ; Topping concrete ; In-plane shear ; Out of plane shear ; Diaphragm |
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Abstract |
Recently, the interest of precast concrete is increased for rapid construction in construction fields. Experimental study about the shear performance of the joint between hollow core slabs which have internal core to reduce their weight was performed. Main test variables were thickness of the topping concrete and existence of the wiremesh. Total 8 specimens including 4 in-plane shear and 4 out of plane shear were tested. Test results were analyzed in terms of cracking load, failure load, failure aspect, stiffness and ductility, and compared its design load to develop optimum design details. Test results indicated that the shear performance of the non-shrinkage mortar specimen was similar to that of 30㎜ thickness topping concrete specimen, and the effect of wiremesh reinforcement did not affect the failure load or stiffness of the specimens but the increase of ductility. And this paper presents the comparison results of the test results and design load to provide the optimum detail of the joint design between the hollow core slabs.
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