FIELD: chemistry.
SUBSTANCE: composition includes a mixture of asphalt and aggregates in a system of additives distributed therein, said system of additives including: i) from about 10 to 60 wt % amine or modified amine surfactant and ii) from about 20 to 90% asphalt rheology modifying components. Said asphalt rheology modifying component includes: i) at least one wax component, ii) optionally one or more infusible components that are insoluble in asphalt and ii)at least one resinous component, and mixtures and combinations thereof. The amount of said system of additives in the asphalt composition ranges from 0.2 to 10 wt % per content of asphalt in said composition. The invention also relates to a method of improving water-resistance properties of a hot asphalt mixture containing aggregates. Said method involves adding an effective amount of said system of additives to said asphalt.
EFFECT: system of additives affects adhesion and cohesion properties of asphalt by considerably improving resistance of hot asphalt mixtures to damage caused by moisture.
21 cl, 2 tbl, 1 ex
