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Asphaltenes extracted from a sample of high-viscosity oils from the Ashalchinskoye deposit of the Republic of Tatarstan and the Boka de Haruko deposit of the Republic of Cuba, as well as a sample of oxidized road bitumen of the BND 50/70 grade produced by TAIF-NK of the Republic of Tatarstan. Five fractions of asphaltenes of these oils and petroleum products were obtained by stepwise extraction with an alcohol-benzene solvent with different alcohol content after precipitation of asphaltenes from oil with hot isooc...

The most appropriate way to increase grip of bitumen with mineral materials is the use of adhesive additives which are slowing down the process of aging of bitumen due to oxidation and increasing durability of pavement. Adhesive properties of bitumen are important characteristics, as they are having a huge impact on operational properties of composite materials, such as asphalt mixtures. To understand the chemical behavior of the binder components interaction and improve adhesion to mineral components of asphalt c...