Dynamic identification of a stone masonry building: influence of damage and of CRM retrofitting

The dynamic identification of a full-scale, two-storey building, made rubble stone masonry, was achieved. Different configurations were analyzed: unstrengthened masonry and retrofitted in both undamaged damaged conditions. Damage accomplished by testing the building under lateral cyclic loading, to reproduce seismic effects. strengthening technique (CRM – Composite Reinforced Mortar) consisted plastering outer facades means 30 mm tick mortar coating reinforced with glass-fiber polymer meshes introducing transversal connectors injected masonry. mode shapes natural vibrating frequencies analyzed compared, evidencing effects damage retrofitting. A finite element numerical model developed, perform eigenvalue analysis calibrate equivalent stiffness for different configurations.