Additive for a bitumen and bituminous product

摘要

An additive for a bitumen or polymer modified bitumen product, which is prepared by mixing together a sulphur-based product, a vulcanized rubber, for example, a waste vulcanized rubber, preferably a fatty acid, and a bitumen, is described. The use of this additive for preparing, with very limited gaseous emissions, elastomer-containing bituminous product is also described. Such use may be especially suitable for making bituminous coated material including, for example, asphalt concrete.

主权项

1. An additive for a bitumen product which is prepared by mixing together:
(a) a sulphur-based product; (b) a vulcanized rubber; (c) optionally a fatty acid; and (d) a bitumen; wherein the content of said bitumen (d) is from 5% to 35% by weight, on the basis of the total weight of the additive.