PORTO, V. S.; PORTO, Valdênia de Sousa.
Résumé:
The society's concern for the environment has been increasing steadily over the
years. The population has focused on the concepts of sustainabiiity and thus
various segments related to science and technology is looking for alternatives to
control or minimize damage caused by indiscriminate consumption of raw
materials and energy, and the high volume of waste generated. In this perspective,
the goal of this research is to optimize the use of waste flat glass in substitution for
feldspar on ceramic sanitary earthenware, to obtain products having physicalmechanical
properties similar to traditional, as well as decrease the amount of this
type of waste accumulated in the environment. The raw materials were
characterized by testing for energy dispersive spectroscopy x-ray; sieve analysis,
x-ray diffraction, differential thermal analysis and thermogravimetry. They were
then put through the programs and 7.0 statistic reformix ceramic masses with and
without waste of flat glass in the percentage of 4%, 5% and 6%, then its
rheological properties were evaluated. The ceramic samples were initially dried at
110 ° c, to be burned at temperatures of 1.220 °C, 1.230 °C, 1.240 °C and 1.250
°C. Were performed following physico-mechanical water absorption, apparent
porosity, apparent specific gravity, linear shrinkage in drying and firing, loss on
ignition, bending test at three points, and scanning electron microscopy. The
results showed the importance of using an optimization program product and the
use of glassy residue mass for sanitary earthenware can be used by replacing
partially the feldspar in proportions close to 5%, since these present values of
physico-mechanical properties in permitted by industries porcelain stoneware and
ABNT.
