Traditional and Innovative Techniques for the Seismic Retrofitting of Masonry Buildings

The effectiveness of innovative mortar-based composites for the seismic retrofitting of masonry structures was investigated through shake table tests. The experimental study was carried out on a natural scale wall assemblage under natural accelerograms, applies with increasing intensity up to failure. The proposed strengthening system comprises connectors and horizontal strips of Ultra High Tensile Strength Steel (UHTSS) cords externally bonded to the masonry with hydraulic lime mortar, within the thickness of a plaster layer. Test results proved the effectiveness of SRG as a promising solution, to integrate or substitute traditional steel tie-bars, for improving the out-of-plane seismic capacity of masonry walls.