Utilização de resíduos oleosos provenientes das atividades de exploração e produção de petróleo para aplicação em camadas estabilizadas de bases e sub-bases de pavimentos rodoviários.

Abstract

The Exploration and Production (E & P) of petroleum generate an oily residue that is obtained from various sectors of the production chain of oil such as cleaning of filters, oil spills, tank bottom, cleaning in general and transport. The final disposal of this residue on the environment has caused great concern despite the oil industry have sought to adopt policies that improve the performance of their activities. This study to present an alternative reuse of the residue oil industry by stabilizing / solidification of soils along with the oily residue for use in roads, using as a stabilizing agent lime and cement. The experimental procedure was divided into two parts: physical and chemical characterization of materials used in research and mechanical characterization of the soil-residue-lime and soil-residue-cement mixture. After an initial experiment, we adopted a percentage of incorporation of 17.5% of oily residue in the mixture and lime and cement were added in concentrations of 4.0%, 5.5%, 7.0%, 8.5% and 10%. The addition of lime and cement in the mixture caused a significant increase in CBR values when compared to the values found for the soil in its natural state. The values obtained in the test were to expand within the preset limits for DNIT for mixtures with the addition of lime and out of range for the mixtures with addition of cement. All CBR values found for the two types of mixtures were studied within the standards of DNIT for use in subbase of road pavements. As for environmental characterization, the ideal mixture soillime- waste was not classified as dangerous and not inert.