An Investigation into the flexural behaviour of horizontally curved beams strengthened with NSM CFRP laminates

Abstract

An experimental program was carried out to investigate the flexural behavior of Carbon Fibre Reinforced Polymer (CFRP) strengthened reinforced concrete curved beams using the Near Surface Mounted technique (NSM). Seven curved beams were tested, and three of them were taken as control beams without having CFRP. Four-point bending test was used to evaluate the performance in out of plane bending. CFRP strengthened beams showed a significant increase in the ultimate load by almost 23% and 10% for the retrofitted beams with 2000 mm and 4000 mm curvature beam respectively compared to the control beams.