STRENGTHENING REINFORCED CONCRETE ONE WAY SLABS BY OVERLAY TECHNIQUE & USING CFRP

The objective of this research is to study the behavior of reinforced concrete one way slabs, that strengthened with concrete overlay with and without externally bonded Carbon Fiber Reinforced Polymer (CFRP) sheets. The experimental results showed that increasing in concrete overlay thickness from 25mm to 50mm caused an increase in t he first cracking load value, this increasing ranged about (33% to 100%) while for ultimate load was about (31% to 88%) in compared with control slab specimens. The increasing in compressive strength of the concrete overlay did not give a considerable increase in the first crack loading an d ultimate loading.