SILVA, B. J.; http://lattes.cnpq.br/5024997034210947; SILVA, Bartolomeu Jorge da.
Résumé:
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.
