Estudo do comportamento do mástique asfáltico a partir da adição de cascalho de poços de perfuração de petróleo.

Abstract

Among the challenges of designing a floor that performs well, the choice of materials is one of the most important points, and in addition, understanding the interaction of these materials. Among the components of the pavement, the filer presents important interactions with the binder, which is the formation of asphalt mastic, which reflects on the properties of asphalt mixtures. One of the materials that has been studied as a possibility to be used as filer in asphalt mixtures, is the cuttings from oil well drilling activities. The present work seeks to understand the rheological behavior of asphalt mastic based on the addition of gravel from drilling wells. For this, the formation of asphalt mastics was carried out in three filer / CAP proportions established by the bibliography, which are 38% of gravel residue, 19% of gravel residue + 19% of lime, and 38% of lime. Finally, rheological tests of rotational viscosity, performance grade (PG), MSCR and LAS were performed on samples of asphalt mastics and pure CAP. The results indicate that the incorporation of the gravel residue in the binder, increases the viscosity and the complex module, however, reduces the damage resistance. Therefore, the behavior of the asphalt mastic from the incorporation of the gravel residue, presents a lower susceptibility to thermal variation, and consequently, a tendency to increase in the resistance to permanent deformation, however, it presents a shorter fatigue life.