The results of the study of the process of obtaining a bitumen composition for cold-applied roofing materials are described. For this purpose, the modification of construction bitumen BNB 70/30 with rapeseed oil (RO) and rubber crumb (GK) from recycled tires was used. The effect of the concentration of RO and GK on the softening temperature, penetration, ductility, elasticity, flexibility at -25°C, and adhesion was studied.
The study results of the process obtaining of petroleum bitumen with improved quality indicators are described. The method of mixing the tar of paraffinic oils with the residue and the distillation of Orkhiv oil with subsequent oxidation of this mixture was used. To conduct the research, tar extracted from Western Ukrainian paraffinic oils was used. The influence of temperature, oxidation duration and air consumption on the operational properties of oxidized petroleum bitumens were determined.
The tar oxidation process has been studied at 523 K, air flow rate of 2.0; 2.5 and 5.0 h-1 and process time of 6, 9 and 12 h in the presence of 2.5; 5.0 and 7.5 mas % (to calculate for the raw material)of petroleum resin with fluorine atoms. The tar is the residue of black oil vacuum distillation obtained from the oils of Western-Ukrainian fields. The effect of process conditions on the characteristics of obtained bitumen has been determined. The structural-group composition of blown bitumen has been examined.