BITUMEN MANUFACTURE PROCESS Russian patent published in 2005 - IPC

Abstract RU 2253661 C2

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.

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RU 2 253 661 C2

Authors

Kalinin V.V.

Khudjakova T.S.

Dates

2005-06-10—Published

2000-11-10—Filed