S. De Santis1,a, G. De Canio2,b, G. de Felice1,c, D. Fantauzzi1,d, E. Focaccetti1,e, and I. Roselli2,f
1) Roma Tre University, Department of Engineering, Via Vito Volterra 62, Rome, Italy.
e-mail: a email@example.com; c firstname.lastname@example.org;
d email@example.com; e firstname.lastname@example.org.
2) ENEA, Via Anguillarese 301, Rome, Italy.
e-mail: b email@example.com; f firstname.lastname@example.org.
Keywords: Basalt Textile Reinforced Mortar (BTRM), Retrofitting, Composite Materials, Fabric Reinforced Cementitious Matrix (FRCM), Shake Table Tests, Steel Reinforced Grout (SRG), Strengthening, 3DVision.
Abstract. Masonry walls are particularly vulnerable against out-of-plane seismic actions. Steel tie-bars can prevent their overturning, but collapse may take place also by bending, leaf separation or disaggregation. Textile Reinforced Mortar (TRM) composites can be applied to improve their seismic capacity. Nevertheless, a deeper knowledge still needs to be gained before TRMs can be confidently used in engineering practice. This work describes a shake table test carried out on two full-scale wall specimens, one made of two leaves of rubble stones and one of regular tuff blocks, subjected to seismic out-of-plane vertical bending. The walls were tested unreinforced, then repaired and strengthened with TRMs, and tested again. A bidirectional basalt mesh was applied over the entire surface of the stone wall, while a unidirectional textile of ultra high tensile strength steel was used on the tuff wall. Both textiles were installed with a lime based mortar. The response of the specimens before and after retrofitting are compared in terms of acceleration and displacement capacity, failure modes, damage development and dynamic properties.