Patent ID: 7981466
Filing Date: 2011-07-19
Classification: C04B,C08K,C08L,C09D,E01C,Y02A,Y02P,Y02W

Abstract:
1. A method of making bituminous paving comprising the steps of: (a) mixing a non-foamed asphalt binder composition and lubricating additive selected from the group consisting of a lubricating surfactant, lubricating acid, viscosity modifier, dispersant viscosity modifier, additive containing viscosity modifier or dispersant modifier, extrusion and molding production processing aid, polyolefin, sulfur and combinations thereof, with aggregate at a temperature of 280° F. or lower, to coat the aggregate and produce a heated paving material at a warm mix temperature at least 30-100° F. lower than a comparison production temperature needed to produce a comparison paving composition containing binder-coated aggregate without the lubricating additive; (b) applying the heated paving material to a surface to be paved to provide an applied paving material, and (c) compacting the applied paving material at a temperature of 260° F. or lower to form a paved surface.