PRODUCTION OF THERMOSTABLE ROAD BITUMENS BY THE METHOD OF "OXIDATION-COMPOUNDING"

The paper proposes a technology for producing petroleum road bitumen by compounding deeply oxidized with tar, pre-oxidized to various temperatures, in order produce binders stable the processes of thermo-oxidative aging. rate technological and chemical aging tar has been studied. It was found that is most susceptible technological, shown use pre-oxidation promising direction production standard grades binders. obtained compounded bitumens have high extensibility values at 250C maximum tensile force, which characterizes their cohesive properties, as well needle penetration depth 00C low brittleness indicate good low-temperature properties bitumen. revealed softening point 360C during can achieve minimum temperature change after obtain BND 70/100 100/130 according GOST 33133-2014. resulting less destructive be effectively used paving