Experimental Investigation of One-Way Shear Behavior in Reinforced Concrete Flat Slabs Strengthened with Micro-Polypropylene Fibers

摘要

This research is presenting a strengthening technique for increasingone-way shear resistance in reinforced concrete flat slabs based on addingmicro polypropylene fibers during concrete mixing. Concentric loading is used in this research for studying the influence of different ratios of fiber on the behaviorof one-way solid slabs usingthree different compressive concrete strengthvalueswithconstant ratio of main steel reinforcement. Results obtained showed significance increase in the punching load capacity for both one-way shear in flat slabs. In addition, results showed significant decrease in the deflection at mid-span of the slab for concrete strengths equal or less than 30 MPa.