DEPÓSITOS DE RESÍDUOS DE ROCHAS ORNAMENTAIS: COMPOSIÇÃO, DIMENSIONAMENTO E POSSÍVEIS USOS NO SETOR DE CONSTRUÇÃO CIVIL

Deposits of dimension stone wastes: composition, sizing and use for building

Abstract

The production of dimension stones in Brazil is relevant mining activity, especially in the State of Espírito Santo, which exports a major part of the Brazilian marbles and granites. Rock blocks processing generates enormous quantity of waste through the discarding of the Dimension Stone Processing Slurry (DSPS), besides block fragments. This work aims to estimate the quantity of DSPS wastes stored in the Municipality of Cachoeiro de Itapemirim (ES), to define its physical and chemical characteristics, and to suggest applications in building, through comparison with bibliographic data. Geoprocessing methods, together with field survey, were used for delimiting and quantifying the volume of the deposits identified in aerial images. The chemical composition of the samples collected in drilling holes was compared with data from previous works that tested the applicability of these wastes to produce red ceramic, concrete, cement and mortar, bricks, and glassy. The chemical composition of the deposited wastes is compatible with the tested materials, indicating the technical viability of their usage as raw material for the building sector. Nevertheless, the segregation of wastes providing from the two main lithological types (marble and granitic rocks), and of conventional and diamond wire looms, will allow better quality control and most noble applications.

Keywords: Abrasive Slurry; Use of Waste; Waste Management.