HYBRID POLYPROPYLENE-GLASS CEMENT CORRUGATED SHEETS/

An innovative process in which fibrillated polypropylene networks and glass fibres are introduced into a semi-dry cement matrix to form roof ing and thin cladding sheets is described. The tensile characteristics of the hybrid polypropylene-glass/cement sheet in relation to its cri tical volume fraction of polypropylene are analysed and tests on the b ehaviour of the corrugated hybrid sheet under flexure are reported. Th e results indicate that the hybrid sheet yields superior engineering p roperties in comparison with the individual fibre-reinforced cements, and the high impact toughness of the hybrid sheet is a considerable ad vantage for practical roofing.