Formulação de massas cerâmicas para a produção de telhas.

Abstract

Among the major products produced by the red ceramic industry, for the construction, there are the ceramic tiles, which are components used for roofing, with varied configurations and specifications. Firms in this sector, there is an evaluation of the characteristics of the clays used by them, and most have no knowledge about the properties of the masses used in the manufacturing process. The raw materials (clay and accessories) that make up the masses have the chemical, mineralogical and texture, which will influence the processing and final properties of the tiles. In this study were characterized five types of clay provided by a red ceramic industry of the State of Paraiba, aiming to make ceramic bodies that meet appropriate specifications for the manufacture of tiles with technological properties desired. The clays have characterized typical characteristics of raw materials for brick clay. As for texture, clay and only two had values close to the masses indicated by the Winkler diagram for the production of tiles. The clay selected and chosen one of the formulations, which showed lower plasticity, elected the most suitable for the manufacture of ceramic tiles, with technological properties that met the minimum requirements recommended by the Institute for Technological Research - IPT.