ASPHALT AND CONCRETE MIXTURE Russian patent published in 2003 - IPC

FIELD: road-building materials for pavement of motor roads. SUBSTANCE: asphalt and concrete mixture includes bitumen, mineral powder from tailings of beneficiation of wet magnetic separation of iron-carrying ores and mineral filling agent. Mineral powder from tailings of beneficiation of last stage of wet magnetic separation of ferriginous quartzites of Kursk magnetic anomaly containing 70% or more fraction with particle size 250 sq.m/kg m and specific surface above 250 sq.m/kg is utilized in the capacity of mineral powder from tailings o beneficiation of wet magnetic separation of iron-carrying ores. EFFECT: acceptable strength and water-resistance of pavements. 4 tbl