Influência da adição de resíduo de polimento de porcelanato nas propriedades de misturas asfálticas.

Abstract

Currently there is a concern with the final destination of the solid waste of mineral origin (SW) generated in the industries, as a consequence its final disposal in landfills generate a great volume. In order to decrease the amount of SW in the landfills alternative solutions are being developed for its reuse. The use in the manufacture of asphalt mixtures is an alternative destination since they have characteristics similar to their usual components. This research intends to make feasible a reuse of the Porcelain Polish Residue (PPR) in the asphalt mixtures as a filler. For this purpose, the mechanical characterization of asphalt mixtures with quicklime and PPR substitution was carried out using the SUPERPAVE methodology, in which the tensile strength tests were performed using diametrical compression (TS), resilient modulus (RM) and resistance to damage by induced humidity - modified Lottman. The results obtained in the TS test were similar, for the RM they showed that the substitution of the filer was not dissimilar in the resistance, having values very close also, for the DNIT to quicklime having a higher value and for the ASTM the PPR presenting a value slightly above. In the modified Lottman assay resulted in a drop in strength, having the traction retained strength ratio for quicklime of 87.6% and for PPR of 54.8%. Therefore, it is important that for the correct use of the PPR in asphalt mixtures also additives are added adhesion improving.