Additive for bitumen and bituminous product

摘要

An additive for bitumen or polymer modified bitumen product which is prepared by mixing together: (a) a sulphur-based product; (b) a vulcanized rubber, for example a waste vulcanized rubber; (c) preferably a fatty acid; (d) a bitumen is disclosed. The use of this additive for preparing, with very limited gaseous emissions, elastomer-containing bituminous product which reveal especially suitable for making bituminous coated material of high performance as asphalt concrete is also disclosed.