Asphalt modifier comprising a combination of a surfactant and rheology modifier for warm-mix applications

摘要

Disclosed is an additive package for warm-mix asphalt formulations for the pavement of road surfaces, said additive package comprising (a) from 20-60 wt percent based on the total weight of the additive package of surfactant component comprising at least one surfactant selected from amines, diamines, polyamines, ethoxylated amines, ethoxylated alkyl diamines, ethoxylated alkyl polyamines, amido amines, amidopolyamines, imidazolines, and/or any of their corresponding organic and/or inorganic salts, and mixtures and combinations of same, and (b) 30-80 wt percent based on the total weight of the additive package of an asphalt rheology modifying component, wherein said asphalt rheology modifying component comprises at least one of (i) a wax component and (ii) a resin component, the additive package being formulated into a powder, pastillated or flaked free-flowing solid.