Demchuk Y. Bitumen modified by resins obtained from phenolic fraction of coal tar

The dissertation research solved an important scientific and practical problem – the production of high-quality road bitumen modified with resins obtained from the phenolic fraction of coal-tar pitch (CTP). The experience of Ukraine and the world experience in the application on an industrial scale and the development of new various modifiers of road bitumen are analyzed. Based on a review of scientific and patent literature, the direction of research has been proposed. The standard and modern research methods for bitumen, its modifiers, bitumen based products, polymer modified bitumen (PMB), bituminous emulsions (BE), slurry surfacing mixes (SSM) and pavement have been examined. The main characteristics and composition of raw materials were determined: distilled petroleum bitumen BD 60/90; oxidized petroleum bitumen BND 60/90; wide phenolic fraction (WPhF); narrow fractions distilled from WPhF (initial boiling point–185 °C and 185 °C–final boiling point). The methods of obtaining phenol-cresol-formaldehyde resins from WPhF, narrow fractions and distilled from them concentrates of phenol and/or its derivatives ("raw" phenols), PMB, BE, SSM were examined and improved. Key words: bitumen, modified bitumen, adhesion promoter, phenolic fraction, phenol-cresol-formaldehyde resin.