TY - JOUR ID - TI - EXPERIMENTAL INVESTIGATION FOR THE BEHAVIOR OF ORDINARY REINFORCED HYBRID CONCRETE HOLLOW CORE SLAB AU - Ammar Y. Ali AU - Labeeb S. Al-Yassri AU - Mohammed M. AL-Khafaji PY - 2017 VL - 10 IS - 2 SP - 214 EP - 225 JO - Al-Qadisiyah Journal for Engineering Sciences مجلة القادسية للعلوم الهندسية SN - 19984456 24117773 AB - This paper presents an experimental study to investigate the effect of hybrid strength concrete (two types of concrete, 25 MPa and 70 MPa) on the behavior of one-way hollow core concrete slab ordinary reinforced with steel rebars. The hybrid HCSs showed an enhancement in shear strength capacity, cracking load and ductility as compared with to HCS with normal strength concrete (25 MPa). The increase in shear strength capacity and cracking load were about (16%) and (29%) respectively higher than normal strength hollow core slab. Also, from experimental results, the crack width of hybrid HCS was narrower than that for normal strength slab at all stages of loading. At service load stage, the width of crack was narrower than normal strength slab by about (10-31%). The failure mode still brittle diagonal shear failure.

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