Incorporação de resíduo de granito em massa cerâmica para revestimentos.

Abstract

The recycling of granite sawing wastes as alternative raw materials in ceramic mass has been studied by several researchers in the last years. However, these studies are made without experimental design. Thus, the aim of this work is to verify the behavior of water absorption and mechanical strength after firing from ceramic mass with residue from granite by experimental design. The samples was characterized in terms of particle size distribution, chemical composition, X-ray diffraction and thermal differential analyses. After the characterizations they were defined the compositions were determined using a simplex-lattice experimental. The samples were fired at 1000, 1100 and 1150°C and submitted to water absorption and mechanical strength measurements. The results indicated that waste consisted of quartz, mica and feldspar and with 25% of granite waste addition the ceramic body presented the best technological properties. Based on the results it can be concluded that the simplex-lattice experimental method and the response surface is a tool that can help to develop formulations with a maximum amount of residue from granite.