New porcelainized stoneware materials obtained by recycling of MSW incinerator fly ashes and granite sawing residues

Porcelainized stoneware is a flooring and covering material of the ceramic sector with versatile and modern characteristics similar to those of the na tural stone. It is a compact product, extremely hard and homogeneous, gener ally not fully vitreous (unglazed) in its surface obtained by fast firing o f the starting bodies, a mixture of kaolinitic clays, feldspars and quartz in an appropiate relationship. The final product is characterized by its al most zero porosity, being adequated to sustain heavy traffic intensity for interiors or for exteriors, both in modern or classic constructions with a wide range of aspects, designs and colors. According to the chemistry and m ineralogical composition of the granite and incinerator wastes, this paper deals with the use of an incinerator fly ash of municipal solid wastes (MSW ) and two different granite sawing residues in the obtaining of new types o f porcelainized stoneware. By considering most of the physical and mechanic al properties here determined, these modified porcelainized stoneware (MPS) materials are close to the conventional porcelainized stoneware and glass ceramics products. (C) 2001 Elsevier Science Ltd and Techna S.r.l. All righ ts reserved.