Rejuvenation of vacuum tower bottoms through bio-derived materials
AssigneeIowa State University Research Foundation, Inc.
InventorsRonald Christopher Williams, Joseph Herbert Podolsky, Nacu Hernandez, Eric W. Cochran
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Abstract
The present invention relates to an asphalt product. The asphalt product includes an asphalt binder and a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil, where the bio-oil blend is mixed with the asphalt binder to form an asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. The present invention further relates to methods of producing an asphalt product and methods of applying an asphalt product to a surface.
Claims36
A method of producing an asphalt product comprising:
- providing an asphalt binder, wherein the binder is a vacuum tower distillation bottom;
- providing a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil;
- and
- mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.
A method of applying an asphalt product to a surface, said method comprising:
- (a) providing an asphalt binder, wherein the binder is a vacuum tower distillation bottom;
- (b) providing a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil;
- (c) mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.;
- (d) heating the improved asphalt product to a temperature of 145° C. to 155° C.;
- (e) coating mineral aggregate with the heated asphalt product to produce an asphalt material which has improved rheological properties compared to that of an asphalt material absent the bio-derived material;
- (f) applying the heated asphalt material to a surface to be paved to form an applied paving material;
- and
- (g) compacting the applied paving material.
A method of producing an asphalt product comprising:
- providing an asphalt binder;
- providing a bio-oil blend comprising a mixture of a non-hydrogenated heat bodied bio-oil and a partially hydrogenated heat bodied bio-oil;
- and
- mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.
A method of applying an asphalt product to a surface, said method comprising:
- (a) providing an asphalt binder;
- (b) providing a bio-oil blend comprising a mixture of a non-hydrogenated heat bodied bio-oil and a partially hydrogenated heat bodied bio-oil;
- (c) mixing the asphalt binder with the bio-oil blend under conditions effective to produce an improved asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.;
- (d) heating the improved asphalt product to a temperature of 145° C. to 155° C.;
- (e) coating mineral aggregate with the heated asphalt product to produce an asphalt material which has improved rheological properties compared to that of an asphalt material absent the bio-derived material;
- (f) applying the heated asphalt material to a surface to be paved to form an applied paving material;
- and
- (g) compacting the applied paving material.
Dependencies are inferred from the claim text.