FIELD: manufacture of road building materials.
SUBSTANCE: invention relates to materials used in road building, in particular to a bitumen binder for pavement, which is composed of, wt %: bitumen 44.4-98.0, alkanediene/styrene block copolymers 0.1-22.3, and industrial oil 1.9-33.3. Industrial oil is mixed with block copolymers at 80-160°C prior to be added to bitumen at 110-160°C.
EFFECT: achieved full homogeneity of binder, eliminated risk of explosion or fire during manufacture process, and enhanced heat resistance, elasticity, and crack growth resistance, and service time of pavement up to 2 times.
5 cl, 5 tbl, 4 ex
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