Utilização de resíduo de pintura industrial incorporado na pavimentação

Abstract

The implantation and operation of an industrial painting plant in Porto Velho resulted in the generation of residues of complexity and value compatible with the composition of the coatings applied in the process. However, the reuse of this material was out of the question by the industry, which discarded it as waste. This work aims to generate alternatives for the reuse of the waste in question in the local paving. The use of solid residual material from the industrial paint sector and unconventional material in the asphalt mixture was evaluated instead of the traditional elements in the coating layer. For that, the residue generated in the industrial painting sector of hydro mechanical equipment and the survey of the hydroelectric plants in the city of Porto Velho / RO was used. The Metallurgical and Mechanical Industry of the Amazon (IMMA) is responsible for the complete construction and installation of hydro mechanical equipment of the Santo Antonio HPP and Jirau HPP, installed in the town of Porto Velho. Currently, these wastes are destined to landfill in the state of Mato Grosso, causing damages to the environment and to the metallurgical industry itself. The industrial paint residue was used as a small aggregate in the hot-rolled asphalt concrete (CBUQ), replacing the material traditionally used in this region, that is, the sand of the deposit. A comparative analysis was performed between the conventional and alternative bituminous mixtures with the two types of small aggregates using the same optimum content of the mixture with the CAP-50/70. CBUQ test specimens were cast and the results concerning Marshall stability, flow at 60 ° C, were analyzed. The results of the tests show that it is possible to add 15% of the mixture made with the industrial paint residue as a small aggregate without altering the mechanical properties of the pavement compared to the conventional mixture made with sand.