ASPHALT CONCRETE MIX CONTAINING A FILLER MADE OF METALLURGICAL WASTE AND A PG-GRADE BITUMEN BINDER Russian patent published in 2023 - IPC C08L95/00 C04B26/26 C04B18/14 E01C7/18 

FIELD: building materials.

SUBSTANCE: invention relates to the field of producing road-building materials, namely, to a composition for an asphalt concrete mix; invention can be used in road and airfield building or in the repair of surfaces of intra-city streets and roads in the climatic zone I-III and in the continental conditions of Siberia and the Far East. Asphalt-concrete mix includes a bitumen binder of grade PG or above 52 to 40, and as a filler, contains metallurgical waste with the following ratio of components wt.%: crushed slag 8 to 16 mm fraction 35.4 to 42.4; crushed slag 4 to 8 mm fraction 18.2 to 25.2; slag sand 0 to 4 mm fraction 37.4 to 41.4, wherein the bitumen binder is contained in the amount of 3.9 to 4.5 wt.% over the 100 wt.% of the mineral part.

EFFECT: possibility of increasing operation characteristics of asphalt concrete in adverse operating conditions; expanding the scope of uses of metallurgical waste, ensuring the disposal thereof, improving the environmental situation, and reducing the costs of manufacturing asphalt concrete mixes.

1 cl, 4 tbl, 2 dwg