Cracking resistant asphalt binders including blend of low viscosity vacuum tower bottoms and bio-resins, and related methods
AssigneeMarathon Petroleum Company LP
InventorsCristian S. Clopotel, Anas A. Jamrah, Lora C. Collins
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Abstract
A cracking resistant asphalt binder includes a high viscosity vacuum tower bottoms material having a vacuum viscosity greater than about 50,000 P at about 60° C., greater than about 10.0 weight percent of a low viscosity vacuum tower bottoms material, and a biomaterial comprising greater than about 80.0 weight percent bio-resin. The combination of the low viscosity vacuum tower bottoms material and the biomaterial imparts desirable properties to the cracking resistant asphalt binder. Related cracking resistant asphalt binder and methods are also disclosed.
Claims20
A cracking resistant asphalt binder, comprising:
- a high viscosity vacuum tower bottoms material having a vacuum viscosity greater than about 50,000 P at about 60° C.;
- greater than about 10.0 weight percent of a low viscosity vacuum tower bottoms material;
- and
- a biomaterial comprising greater than about 80.0 weight percent bio-resin.
A cracking resistant asphalt binder, comprising:
- greater than about 60.0 weight percent of a high viscosity vacuum tower bottom material having a vacuum viscosity greater than about 50,000 P at about 60° C.;
- from about 10.0 weight percent to about 20.0 weight percent of a low viscosity vacuum tower bottoms material having a vacuum viscosity less than about 300 P at about 60° C.;
- and
- greater than about 5.0 weight percent of a biomaterial,
- wherein the cracking resistant asphalt binder exhibits a ΔTc after 40 hours PAV aging higher than about −4.0° C.
A method of forming a cracking resistant asphalt binder, the method comprising:
- providing a high viscosity vacuum tower bottoms material having a vacuum viscosity greater than about 50,000 P at about 60° C.;
- and
- mixing a low viscosity vacuum tower bottoms material and a biomaterial with the high viscosity vacuum tower bottoms material to form a cracking resistant asphalt binder having a ΔTc after 40-hour PAV aging higher than about −4.0° C.
Dependencies are inferred from the claim text.