Influência do uso dos resíduos de corte de granito como fíler no desempenho do concreto

Abstract

Most industrial processes produce large amounts of waste, and when they don’t have a proper destination they may entail great loss to the environment. The civil construction may be pointed as the most indicated sector to the application of these residues, not only because of the amount of resources and raw material consumed, but also because of the constant alternative material demand that meet requirements like low cost, more facility in the execution and durability. The ornamental rocks like marble, granite, sandstone, basalt, gneiss and quartzite are among the several materials used in the civil construction which produce residues. The granite, particularly, when it’s submitted to the beneficiation process, it ends up producing spare cuts. According to Gonçalves et al (2002), about 165.000 tons of granite cut residues are produced – GCR (RCG) – a year in Brazil. Therefore, as the concrete is a material that allows the incorporation of these residues in its production, this work has been developed aiming to provide an alternative destination for the GCR produced by the granite beneficiation industry in the city of Pato Branco – Paraná and surrounding areas. Thus, the GCR were used in addition to the concrete aiming to assess its influence in the properties of this material. For this, concretes were produced with filler contents with a 0%, 5% and 10% in relation to cement mass, and the effect of this addition in the axial compression resistance was studied, in the modulus of elasticity and porosity of concretes. Making an analysis of the obtained results, it is possible to conclude that the addition of the granite filler to the concretes is technically viable, given that the content with 10% was the one which presented the best performance.