Abstract
This study presents an experimental study to investigate the structural behavior of two-way slabs of hollow-core reinforced self-compacting concrete. The experimental program involves the testing of six slabs with size dimensions (450x450x70mm). The slab specimens were divided into two groups, the first group with a hollow-core change in diameter, and the second group with a hollow-core change in number. The experimental results indicated that the increasing the diameter of the hollow core from 15 to 23 and 30 mm decreases the first crack load by 7 percent to 9.65 percent and 14.5 percent and reduces the ultimate load by 4.7 percent to 10.1 percent and 15.8 percent respectively compared with the solid slab. Increasing the diameter of the hollow core and the amount of the hollow core also makes the load-deflection less stiff and decreases ultimate deflection.
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