ASPHALT CONCRETE Russian patent published in 2019 - IPC C04B26/26 E01C7/22 C08L95/00 

FIELD: construction materials.

SUBSTANCE: invention relates to road construction materials and can be used in road and aerodrome construction in I–III climatic zones characterized by cold and wet climate. Asphalt concrete contains components at the following ratio, wt %: crushed stone of 5–20 mm fraction 46–50; spent molding mixture used for production of casting molds in production of steel parts 5–20; sand from screening crushed stone crushing 29–42; mineral powder 3–5; bitumen (in excess of mineral part) 5–5.3.

EFFECT: improved physical and mechanical properties: strength characteristics, water saturation and water resistance coefficient.

1 cl, 3 tbl, 5 ex