PRODUCTION OF CAST ASPHALT CONCRETE MIXTURE USING CARBON MATERIALS AND HEAVY OIL RESIDUES

Abstract

Cast asphalt concrete has a number of unique advantages, among which the increase in density without additional compaction is especially appreciated. However, for cast asphalt concrete production, a special asphalt binder is used, consisting of an increased proportion of bitumen and mineral powder, which greatly increases the cost of the finished coating.The authors conducted studies to study the effect of fine petroleum coke residue of the visbreaking process (visbreaking residue) and synthetic wax on the quality of cast and polymer-asphalt concrete mixtures.In the course of the research, an alternative bitumen-mineral composition based on finely dispersed coke modified as an oil binder was prepared, and synthetic wax was used as a plasticizing additive.As a result of the tests, inexpensive and effective cast and polymer-asphalt concrete mixtures with improved thermal properties, mobility and, at the same time, aimed at solving environmental problems due to the utilization of coke fines and its dusty fraction, were obtained.