Covers hydrocarbon a high performance for merck sharp amp; dohme chaussee and rolling merck sharp amp; dohme chaussee

摘要

Bituminous mix (1) for the foundation layer (5) of road traffic, composed of a set of aggregates (2) coated with a hydrocarbon binder (3), in which the assembly of aggregates (2) represents more than 95% by weight of the bituminous mix (1), in which the assembly of aggregates (2) comprises a granular structure comprising several granular fractions d / d, an intermediate fraction is less than 15% of the aggregates, in which the hydrocarbon binder (3) is less than 5% by weight of the bituminous coated chippings, in which the bituminous mix (1) comprises, after compacting, a void content of less than 8%, in which the hydrocarbon binder (3) is a hydrocarbon binder modified by the addition of polymers or of oil, or modified by foaming or emulsion, by means of which the modulus of rigidity of the bituminous mix (1) times the compacted, is greater than 9000 mpa.