METHOD OF PREPARING BITUMEN COMPOSITION AND BITUMEN COMPOSITION

摘要

FIELD: rubber industry. SUBSTANCE: rubber and especially rubber crumb obtained when reprocessing automobile tares is treated to attain partial or considerable dissociation of rubber network with formation, in particular, of bitumen compositions in which treated rubber, carbon black, and other released components form stable dispersion. Bitumen, hydrocarbon oil, and liquid rubber are utilized for achieving penetration, swelling, and alignment of rubber particles, whereupon thermal and mechanical energies are imposed for primary destruction of vulcanization structure of rubber particles and formation of rubber with at least partly dissociated rubber network. The thus treated rubber can additionally react and mix to be utilized when preparing stabilized polymer-modified bitumen compositions. EFFECT: increased efficiency of reutilizing rubber waste.