Abstract—This study presents an experimental investigation of punching shear strength of Reactive Powder Concrete (RPC) square and triangular flat slabs. Reactive powder concrete is an ultra-high strength and high ductility composite materials in form of a superplasticized cement mixture with silica fume and steel fibers. Six reduced scale reinforced concrete slab specimens divided into two groups (square and triangular slabs) were casted and tested in this study. Each group consists of three specimens which are identical in size and shape but contains different percentages of steel fibers (0, 0.5 and 1%) of total volume. Results indicated that, punching shear strength increases by about (37%) and (100%) in square slabs containing 0.5% and 1% of steel fibers respectively. While this increment is about (53%) and (100%) in triangular slabs which containing steel fiber by 0.5% and 1% by the total volume. 
 

Index Terms—punching shear, steel fiber, flat plat slab, reactive powder concrete

Cite: Tamara Adnan Qasim Al-Shaikhli, "Effect of Steel Fiber on Punching Shear Strength of Non-Rectangular Reactive Powder Concrete Slabs," International Journal of Structural and Civil Engineering Research, Vol. 5, No. 2, pp. 130-135, May 2016. doi: 10.18178/ijscer.5.2.130-135