FE Modelling and Simulation of the Size Effect of RC T-Beams Strengthened in Shear with Externally Bonded FRP Fabrics

The objective of this study is to conduct a finite-element (FE) numerical assess the effect size on shear resistance reinforced concrete (RC) beams strengthened in with externally bonded carbon fibre-reinforced polymer (EB-CFRP). Although few experimental studies have been done, there still lack FE that consider effect. Experimental tests are time-consuming and costly cannot capture all complex interacting parameters. In recent years, advanced models constitutive laws developed predict response laboratory tests, particularly for issues related RC beams, namely, brittle failure modes interface layer between EB-CFRP (debonding delamination). Numerical progressed years can now interfacial stress along bond strain profile fibres normalized main diagonal cracks. This paper presents results nonlinear nine using composites were tested under three series, each containing sizes geometrically similar (small, medium, large). reveal good accuracy. They also confirm strength contribution CFRP decrease as increases.