STRUCTURING ADDITIVE FOR BITUMEN-CONCRETE MIXES Russian patent published in 2023 - IPC C04B20/00 C08L95/00 C04B26/26 C08K3/00 

FIELD: road construction.

SUBSTANCE: invention relates to road-building materials, namely additives for bitumen-concrete mixes, which are used in the construction, operation, reconstruction and overhaul of transport infrastructure facilities in all climatic zones. The additive is made in the form of granules with a length of 3-25 mm and consists of binder and non-calcined petroleum coke with a particle size of less than 2 mm in an amount of up to 100 wt. %, and particle size less than 0.063 mm in an amount of at least 55 wt. %, in the amount of 70 to 90% in the composition of granules.

EFFECT: possibility of replacing bitumen binder with a structuring additive in the production of bitumen-concrete mixes while simultaneously improving a number of characteristics of bitumen concrete: the coefficient of water resistance, resistance to rutting and strength, as well as reducing the cost of manufacturing bitumen-concrete mixture.

1 cl, 2 tbl, 7 ex