Study on the effectiveness of the CRM system: numerical simulations on masonry piers with OOFEM layered elements

A macro-modeling strategy for masonry elements strengthened by using the Composite Reinforced Mortar (CRM) system is presented in paper. The CRM consists application, on walls surface, of a mortar coating reinforced with pre-formed composite meshes, based long fibers, and installation connectors thickness. numerical strategy, developed free, open-source, finite code OOFEM, multi-layer elements, composed plies oriented along wall thickness, representing masonry, plaster fiber-based reinforcement. Non-linear static analyses are performed; "Concrete Damage Plasticity" material model adopted both coating, while, equivalent layer mesh, an elastic-brittle behavior tension considered. characteristics materials independently calibrated basis results experimental tests performed unstrengthened samples, yarns coupons. applied to simulate in-plane out-of-plane piers; compared outcomes coming from shear-compression three-point bending rubble stone samples (350 mm thick). comparison shows that simplified able realistically reproduce terms resistance displacement capacities failure modes.