Shear Behavior of self Compacting Concrete Slender Beams Strengthened With Carbon Fiber Reinforced Polymer Sheets

The main objective of the work in this paper is to study the Shear Behavior of self Compacting Concrete Slender Beams Strengthened With Carbon Fiber Reinforced Polymer Sheets. The experimental work consists of fabrication and testing simply supported reinforced concrete self compacting concrete(SCC) beams , consists of five beams failed in Shear and each beam had 2100 mm length and (175x300)mm cross sectional dimensions, shear span/depth ratio (a/d) of (3)(Slender beam), all SCC beams made from self-compacting concrete with concrete compressive strength of about 45.894 MPa were casted and tested at 28 days. This research is devoted to investigate the behavior and load carrying capacity of reinforced concrete strengthened and repaired with carbon fiber reinforced polymer (CFRP) sheets in Shear . For SCC beams designed to fail in Shear investigate how the number of orientation and configuration of CFRP sheets affect the shear behavior and the load carrying capacity. The results, show that the beams strengthened externally by CFRP sheets provided improvement in ultimate loads. The increase in ultimate loads reached (50 %) the behavior of strengthened and repaired SCC beams by CFRP sheets increasing the ultimate strength and reducing the ultimate central deflection for increasing the load at the cracking stage and also the load capacity and reducing shear crack widths compared with the control beam.