Validation of experimental results of gfrp strengthened corrosion damaged rc columns with existing models

This paper presents the validation of experimental investigation on Glass Fibre Reinforced Polymer (GFRP) strengthened high strength concrete columns. A total of 14 test specimens of 150mm diameter and height of 600 mm were cast and tested. The level of corrosion-damage was 0%, 15% and 30%, glass fibre reinforced polymer wraps with different configurations such as Chopped Strand Mat (CSM), Uni Directional Cloth (UDC) and Woven Roving (WR) each of 3 mm and 5 mm thickness are used in this study. All the test specimens were tested under monotonic loading up to failure, in a loading frame of capacity 2000 kN. The ultimate stress and ultimate strain levels reached by the FRP confined concrete columns have been validated with the existing models. The validation results concluded that Xia and Wu (2000), Fardis and Khalili (1981) and Kono et al. (1998) showed reasonable agreement with the experimental ultimate compressive stresses and strains.