Investigation of The Physico-Mechanical Properties of Bitumen Binder from Oil Sludge Tar for Road Construction

The authors consider the issues of utilization of oil waste in demand in practice for the production of bitumen binders widely used in road construction. To solve this urgent problem, it is necessary to study the chemical composition and physical and mechanical properties of the bitumen binder obtained from oil sludge tar. The aim of the study is to select the optimal conditions for the fractional separation of oil sludge components with the release of tar, as well as to determine the technological conditions for obtaining high-quality road bitumen from tar. A physico-chemical analysis of oil sludge samples was carried out. A step-by-step selection of the distillation product was carried out with its further physico-chemical analysis. The main technological parameters of bitumen binder production have been selected. The physical and mechanical properties of the obtained bitumen samples have been studied and their corresponding grades have been established in accordance with the standard in force in Kazakhstan. By the methods of infrared spectroscopy and high-performance liquid chromatography of tar samples, satisfactory indicators were obtained for the presence of asphaltene compounds that contribute to improving the quality of the road surface. The analysis of the research results showed the prospects of oil sludge processing technologies in order to obtain tar, the raw material for the production of road bitumen. The use of oil sludge as a raw material for the production of road bitumen is economically advantageous due to the relative cheapness of the product and the technological simplicity of the processes of distillation of oil waste and tar oxidation.