Study on Strengthening of RC Slabs using CFRP Wrapping Techniques for Impact Loading

Study deals with experimental and numerical investigation on CFRP strengthened slabs under drop weight impact load test. 10 slabs of size 600mmx600mmx60mm were tested. Impact load of mass 10 pounds was dropped from 18 inches height through guide channel. Fixed support condition is adopted. The CFRP fabrics are strengthened by covering 25%, 50%, 75% and 100% slab area from centre with one and two layers of wrapping. Wet lay-up strengthening technique is adopted. Energy absorption, strengthening effect and punching cone angle parameters are compared with control specimen. Numerical model generated in ANSYS workbench 15. 9 specimens are modelled, crack patterns developed in software and experiment are compared. Two layer 100% CFRP wrap has shown good behavior under impact by absorbing 366.67% more energy than control specimen. Punching cone angle has reduced from 27.3â—¦ to 17.92â—¦. Crack pattern observed in ANSYS showed good agreement experimental results.