Damage-based finite-element modelling of in-plane loaded masonry walls repaired with FRCM

Abstract

Abstract An empirical study of masonry wall repair is presented in the current work. The textile reinforced mortar used for repair comprises a stainless-steel grid embedded in a cement matrix. This composite was applied locally and along the cracks, on a previously damaged unreinforced masonry wall. The repaired wall was then subjected to a pushover load until its maximal strength was reached. Results of the damaged and repaired configurations indicate that recovery, and even a gain of initial stiffness and strength, was achieved. Finite-element simulations of the unreinforced and repaired walls were then carried out with an innovative approach to the repair modelling. The main features of the experimental Unreinforced Masonry Wall were reproduced. Finally, simulations of the repaired wall were generated to assess the gain in strength for several degrees of wall damage. Using this model, the crack patterns were investigated and the effects of different repair configurations are discussed.