Patent ID: 8722771

Claim:
An asphalt concrete composition having high sulfur load with improved properties relative to high temperature rotational viscosity without a reduction in dynamic shear properties, the asphalt concrete composition comprising: a binder composition, the binder composition comprising: a. a polyphosphoric acid, the polyphosphoric acid being present in an amount effective to increase stiffness at lower mixing temperatures, b. a macromolecular polymer having a saturated backbone with macromolecular modifications, the macromolecular polymer being present in an amount effective to increase viscosity of the composition so that it can be used in warm mix applications, c. sulfur, the sulfur being present in loadings ranging from about 20 wt. % to about 50 wt. % of the binder composition, the amount of sulfur being effective to at least partially emulsify in the composition, d. non-surfactant additives based on wax chemistry, the non-surfactant additives based on wax chemistry being present in an amount sufficient to provide a lubricating effect on the composition, and e. bitumen; and an aggregate.