Debonding between FRP and Underlying Masonry: First Results of a 3D Finite Element Model

Abstract

Experimental and numerical results show that the predominant failure mode of FRP strengthened masonry structures is the interfacial debonding, which occurs prior to reaching the compressive strength of the substrate and/or the tensile strength of the FRP composite. In this paper, a three-dimensional numerical model is developed to simulate the experimental response of direct shear test of FRP-masonry joints and. A damage model is adopted for both mortar and bricks characterized by a different behavior in tension and compression.

Compressive behaviour of brick masonry triplets in wet and dry conditions

“…In particular, the vulnerability of old masonry buildings to earthquake events is a weak point which may have dramatic consequences, to an extent that seismic rehabilitation by fibre reinforced polymers (FRP) placing, reinforced injections and renders, repointing, etc. has become a major issue for research [2][3][4][5][6].…”