HOT ASPHALT MIXTURE PRODUCTION METHOD Russian patent published in 2019 - IPC C04B26/26 C08L95/00 

FIELD: construction.

SUBSTANCE: invention relates to road construction, specifically to the technology of preparing asphalt concrete mixtures based on petroleum organic binders, and can be used in construction, repair and operation of road surfaces in all road and climatic zones. Method includes heating of mineral material, its mixing with heated oil binder until complete coating, introduction of plasticiser. Note here that visbreaking residue is initially used as binder in amount of 3.5–4.0 wt% with softening temperature 60–69 °C according to RaB and content of asphaltenes 30–36 %, and after mixing visbreaking residue with mineral materials into produced mixture plasticizer of tar is added in amount of 2.0–2.5 wt% with conditional viscosity at Wu₅ 80 °C in range of 20–161 s.

EFFECT: high adhesion properties of the organic binder to the mineral part of the asphalt-concrete mixture, high water-resistance and strength of the asphalt concrete, process mobility.

1 cl, 5 tbl, 8 ex