Delamination of FRP strips glued to masonry columns: anumerical insight

In this communication a heterogeneous model at the meso-scale for the interpretation of the delamination phenomenon of FRP strips glued to masonry is presented. Both mortar and bricks are modeled independently in tension and compression, through different isotropic damage variables and activation criteria. Reference is made to a masonry pillar, constituted by three Italian standard bricks interspersed by two mortar joints, reinforced by a perfectly-adherent FRP external sheet. The effects on the overall response and collapse mechanisms induced by different mechanical properties of constituent materials are investigated.