ASPHALT CONCRETE MIXTURE Russian patent published in 2006 - IPC C04B26/26 

FIELD: building industry.

SUBSTANCE: invention relates to road-building materials used in car road pavement. Invention proposes asphalt concrete mixture comprising bitumen, crushed stone and crushed stone crushing siftings as "tails" after dry magnetic separation of iron-containing ores, mineral powder and a stabilizing additive as cellulose fiber. The mixture comprises crushed stone and crushed stone crushing siftings from "tails" of dry magnetic separation of iron-containing ores of Kursk magnetic anomaly from Mikhailovsky mining enriching concern as the source of crushed stone and crushed stone crushing siftings from "tails" of dry magnetic separation with the hematite content 19-32% in the following content of components, wt.-%: bitumen (above 100%), 5.8-7.5; crushed stone of indicated sort, 60-80; crushed stone crushing sifting, 8-32; mineral powder, 8-12, and cellulose fiber (above 100% to mineral part), 0.3-0.5. Invention provides increasing the exploitation period of asphalt concrete and reducing its cost.

EFFECT: improved and valuable properties of mixture.

2 cl, 2 tbl