| 摘要 |
FIELD: manufacture of road building materials. ^ SUBSTANCE: process comprises compounding lacquering bitumen (trade mark "G", 75-95%) with road bitumen (10-25%) characterized needle penetration depth 65-110 dmm (25°C) and stretchability 150 cm at 25°C. Bitumen of mark G is preliminarily reduced to fragments and compounding is carried out for 30-45 min at 170-180°C. ^ EFFECT: simplified bitumen manufacture technology and enabled control of quality of hot asphalt-concrete mixes. ^ 4 tbl, 9 ex |
