Avaliação do uso de residuo de Pedra Cariri na composição de massas ceramicas para blocos de vedação

Abstract

The pedra cariri, due to its extraction, produces a high level of training of leftovers, which pollutes the very outskirts of the municipalities, damaging rivers and reliefs of the region. The present study aims to characterize the pedra-cariri residue, along with a clay to propose their use in the formulation of sealing blocks. Initially the pedra- cariri and clay were benefited. These materials have been subjected to a test of plasticity by pfefferkorn, and subsequently to the analysis of x-ray diffraction and x-ray fluorescence, to know their mineralogical compositions. Through fluorescence and x-ray diffraction showed that the stone has a high content of cariri CaO (89.0%), which will help in the densification of the play and in lowering the temperature of burning, and that clay has a good percentage of free silica, which will help in the removal of the CO2 gas resulting from the thermal decomposition of carbonate present in pedra-cariri, helping also in the dimensional stability of the piece. The analysis made, we see a potential use of cariri stone in the formulation of masses for manufacturing sealing blocks.