Estudo comparativo das propriedades químicas do resíduo borra oleosa asfáltica e do ligante asfáltico de petróleo

Abstract

In this work, the main chemical characteristics of asphalt binder oil residue were studied and compared to the properties of the corresponding asphalt binder. The Nuclear magnetic resonance and Fourier transform infrared spectroscopy spectra indicated the presence of aliphatic groups, aromatics, carbonyls and sulfoxides. The thermogravimetric curve showed that the residue begins its thermal decomposition at a higher temperature, probably due to lower content of maltenic fraction. Hydrocarbons polycyclic aromatics (HPAs) were extracted from the maltene fraction using chromatographic methods such as: matrix dispersion in solid phase, chromatographic adsorption in column and gas chromatographic. The results indicate that the materials present toxic HPAs, as well as, mutagenic and carcinogenic.