Experimental Study of Polypropylene Fiber Reinforced Concrete Panels Subjected to Elevated Temperatures

Abstract

The objective of this investigation is to study the efficiency of adding polypropylene fiber for improving the properties of concrete and punching the shear strength of reinforced concrete flat slabs subjected to elevated temperatures. Twelve panels were tested in this study. The models simulate the region of the negative bending moment around an internal column supporting a flat plate roof. One group of slab specimens was tested at room temperatures and three groups of specimens were tested with different degrees of elevated temperatures. The test loads were applied incrementally up to the ultimate carrying capacity. Deformations, crack patterns and ultimate loads were recorded.