| 摘要 |
FIELD: road building, pavements. ^ SUBSTANCE: claimed bitumen modifier contains (mass %): bitumen 47-62; secondary polyethylene (both high-density and low-density one) 3-7; rubber chips 30-35; black oil as plasticizer 2-5; and lime as inorganic devulcanizer 3.0-6.0. ^ EFFECT: bitumen modifier with increased softening point and reduced brittle point. ^ 8 tbl, 1 ex |
