Tuff masonry structures are a large part of the existing cultural heritage in Mediterranean countries and need to be preserved against earthquakes by reversible strengthening systems. External strengthening with mortar-based composites can give a crucial contribution to this challenge because higher bond to masonry substrates is ensured and further disadvantages of resin-based composites are reduced. In this paper, diagonal compression tests on tuff masonry specimens before and after the application of an inorganic matrix-grid (IMG) composite are discussed. Three IMG layouts were investigated: single-side strengthening; single-side strengthening with steel fibre-reinforced polymer (SFRP) ties; and double-side strengthening. A gradual increase in shear strength was observed from single- to double-side strengthened specimens. Single-side strengthening without SFRP ties caused lower ductility.
In-plane behaviour of tuff masonry strengthened with inorganic matrix-grid composites in diagonal compression / Parisi, Fulvio; Iovinella, Ivano; Balsamo, Alberto; Augenti, Nicola; Prota, Andrea. - (2012). (Intervento presentato al convegno 15th European Conference Composite Materials tenutosi a Venezia nel 24-28 June 2012).
In-plane behaviour of tuff masonry strengthened with inorganic matrix-grid composites in diagonal compression
PARISI, FULVIO;IOVINELLA, IVANO;BALSAMO, ALBERTO;AUGENTI, NICOLA;PROTA, ANDREA
2012
Abstract
Tuff masonry structures are a large part of the existing cultural heritage in Mediterranean countries and need to be preserved against earthquakes by reversible strengthening systems. External strengthening with mortar-based composites can give a crucial contribution to this challenge because higher bond to masonry substrates is ensured and further disadvantages of resin-based composites are reduced. In this paper, diagonal compression tests on tuff masonry specimens before and after the application of an inorganic matrix-grid (IMG) composite are discussed. Three IMG layouts were investigated: single-side strengthening; single-side strengthening with steel fibre-reinforced polymer (SFRP) ties; and double-side strengthening. A gradual increase in shear strength was observed from single- to double-side strengthened specimens. Single-side strengthening without SFRP ties caused lower ductility.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.