Elementi di copertura sostenibili: un'indagine teorico-sperimentale

In this paper, a sustainable solution for roofing is investigated. It con The concerns the use of High Performance Fibre Reinforced Cementitious Composites to allows the designer the reduction of the dead weight and improving at the same time thermal, acoustic insulation and fire resistance. Thin slabs can be used as tertiary elements in roof decks beside the spandrel beams and the simply supported prestressed precast roof elements. The idea is that of coupling textile and UHPFRC technology, by means of an interposed polystyrene layer. A wide experimental investigation is in progress to mechanically characterize the materials in uniaxial tension and compression, in order to identify all the data needed for design like toughness, bending resistance, fire resistance and durability. With reference to textile materials, they are reinforced with glass fabric. The mechanical characteristics are deduced in uniaxial tension, while the structural behaviour of the composite will be tested in bending. The attention is here focused on the problems inherent with the experimental evaluation of individual materials constitutive relations and on the non-linear finite elements modelling of the bending behaviour of the composite.