Cracking resistant asphalt binders including high viscosity vacuum tower bottoms material and at least one of a heavy vacuum gas oil or a biomaterial, and related methods
AssigneeMarathon Petroleum Company LP
InventorsCristian S. Clopotel, Anas A. Jamrah, Lora C. Collins
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Abstract
A method of forming a cracking resistant asphalt binder includes providing a high viscosity vacuum tower bottoms material having a vacuum viscosity greater than about 60,000 P at about 60° C. and a high temperature compliance higher than 85° C., and mixing at least one of a heavy vacuum gas oil or a biomaterial with high viscosity vacuum tower bottoms material to form a cracking resistant asphalt binder having a performance grade of PG 64-22 and a ΔTc greater than −5° C. after PAV aging for 40 hours. Related cracking resistant asphalt binders and methods are also disclosed.
Claims20
A cracking resistant asphalt binder, comprising:
- at least about 40.0 weight percent of a high viscosity vacuum tower bottoms material having a vacuum viscosity greater than about 60,000 P at about 60° C.;
- and
- at least one of:
- heavy vacuum gas oil;
- or
- a biomaterial,
- wherein the cracking resistant asphalt binder has a performance grade of PG 64-22 and a ΔTc greater than −5° C. after PAV aging for 40 hours.
A cracking resistant asphalt binder, comprising:
- at least about 60.0 weight percent of a high viscosity vacuum tower bottoms material having a vacuum viscosity greater than about 60,000 P at about 60° C. and a ΔTc greater than −5° C. after PAV aging for 40 hours;
- at least about 1.0 weight percent of a heavy vacuum gas oil;
- and
- at least 0.50 weight percent of a biomaterial,
- wherein the cracking resistant asphalt binder has a performance grade of PG 64-22 and a ΔTc greater than −5° C. after PAV aging for 40 hours.
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 60,000 P at about 60° C. and a high temperature compliance higher than about 85° C.;
- and
- mixing at least one of a heavy vacuum gas oil or a biomaterial with high viscosity vacuum tower bottoms material to form a cracking resistant asphalt binder having a performance grade of PG 64-22 and a ΔTc greater than −5° C. after PAV aging for 40 hours.
Dependencies are inferred from the claim text.