ROAD CONCRETE MIXTURE (OPTIONS) Russian patent published in 2018 - IPC C09D195/00 C08L95/00 E01C7/18 E01C7/22 

FIELD: construction.

SUBSTANCE: invention relates to the field of materials for road construction, in particular to the compositions of modified road concrete mixtures, and can be used in the construction and repair of road surfaces, airfields, city streets, bridges, etc. Road concrete mixture includes crushed stone or natural sand, sand from screening crushing, mineral powder, bitumen petroleum road viscous and modifier. Modifier is the condensation product of oleic acid with diethanolamine and boric acid at a molar ratio of components (0.5–2.5):3:(0.5–2.5), respectively. Condensation product of oleic acid with diethanolamine and boric acid is used with an amine number of at least 40 mg HCl/g.

EFFECT: invention allows to increase average density, compressive strength at 50 °C, 20 °C and 0 °C, water resistance coefficient, to lower the water saturation index of modified asphalt concrete mixtures, as well as to impart biostability and durability to the compositions of hot road concrete mixtures.

4 cl, 7 tbl