Behavior of Reinforced Concrete Slabs Using Different Amounts of Steel Fibers

Abstract

In this research, the effect of steel fibers on the punching shear characteristics of concrete slabs has been studied. Three specimens were poured and tested, one of them poured without steel fibers, and the others two specimens were poured with two different percentages of steel fibers (0.5% and 1%) of total volume. The effect of adding steel fibers has been discovered through studying its impact on the load-deflection behavior, ultimate capacity, cracking capacity, failure mode, ductility and energy absorption of tested specimens.It is concluded that the loading capacity, deflection, ductility and energy absorption increased with increasing steel fibers ratio. Also, the stresses at slab-column connection have been reduced.