Bonding strength of FRP-to-concrete interface

All existing computational models for calculating interfacial bonding strength of FRP-to-concrete were reviewed and analyzed. Based on a large amount of direct pullout test results, a new semi-theoretical and semi-experiential constitutive model for FRP-to-concrete interface was developed to simulate the mechanical behavior of FRP-to-concrete interface. A new computational model for calculating interfacial bonding strength was proposed based on the constitutive model, and multi-scale finite element analysis was carried out to investigate the interface bond behavior between FRP and concrete. The computational model proposed is demonstrated to be accurate and effective and possess excellent computational stability. ©, 2014, Central South University of Technology. All right reserved.