<p>The bond behaviour is a key factor in the structural performance of UHPFRC plates bonded to RC elements using epoxy adhesive. While UHPFRC tensile stress-strain behaviour consists of a linear stage followed by a strain-hardening stage, the influence of strain hardening on bond behaviour hasn’t been studied. Therefore, pull-push shear tests were conducted with varying concrete substrate compressive strengths, plate bonded lengths and widths. Strain along the plates, slip at the loaded end and the plates’ axial load capacities were recorded to determine the bond capacity and the effective bond length. A finite element (FE) analysis was performed to simulate the tests and further explore the influence of strain hardening on the bond behaviour. The investigation included some plates whose stress reached the strain-hardening stage, and the others didn’t exceed the linear stage. The FE simulation results agreed well with the experimental results. The results indicated an effective bond length, which ranged from 300 to 500&#xa0;mm, with both plate axial load capacity and bond-slip relationship being significantly affected by the substrate compressive strength and plate strain hardening. The analytical models for FRP/steel bonded to concrete agreed well for the effective bond length and the axial load capacity in the case of plate stress that doesn’t exceed the linear stage, while a significant overestimation was observed in the case of plate stress that reaches the strain hardening stage. Therefore, this study recommends developing additional analytical models to account for the effect of the strain hardening stage on the bond behaviour.</p>