This work has as its objective to evaluate the microstructure of fired clayey bodies used to the fabrication of roofing tiles by X-ray diffraction, scanning electron microscopy and mercury porosimetry analysis. Specimens of four roofing tiles bodies were prepared by uniaxial pressure and fired at 975°C. The mechanical test was accomplished to determine the flexural rupture strength. The results indicated that the kaolinitic ceramic body from Campos of Goytacazes, State of Rio de Janeiro, presents a microstructure with higher volume of pores. However, the lower amount of free quartz and pore size were predominant for the better mechanical performance of the body from Campos dos Goytacazes.
red ceramic; roofing tiles; microstructure
