Rejuvenation of vacuum tower bottoms through bio-derived materials
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.
1. 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.
2. The method of claim 1 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C.
3. The method of claim 1 , wherein the asphalt product has a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.
4. The method of claim 1 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.
5. The method of claim 1 , wherein the asphalt product comprises from 0.1 to 10.0 wt. % of the bio-oil blend.
6. The method of claim 1 , wherein the bio-oil is from an oil derived from a source selected from the group consisting of fish, animal, vegetable, synthetic and genetically-modified plant oils, and mixtures thereof.
7. The method of claim 6 , wherein the bio-oil is a vegetable oil from a vegetable source selected from the group consisting of high erucic acid rapeseed, soybean, safflower, canola, castor, sunflower, palm, and linseed oil.
8. The method of claim 1 , wherein the bio-oil blend is a mixture of heat-bodied linseed oil (HBL) and partially hydrogenated heat-bodied linseed oil (PHBL).
9. The method of claim 7 , wherein the linseed oil is a partially hydrogenated heat-bodied linseed oil (PHBL).
10. The method of claim 1 , wherein the asphalt product has a specific gravity of 1.019-1.052.
11. The method of claim 1 further comprising:
blending a mineral aggregate with said improved asphalt product.
12. The method of claim 11 , wherein the mineral aggregate is selected from the group consisting of sand, gravel, limestone, quartzite, and crushed stone.
13. The method of claim 1 , wherein the asphalt product is in the form of asphalt concrete.
14. The method of claim 1 , wherein the asphalt product is in the form of an asphalt mixture.
15. The method of claim 14 , wherein the asphalt mixture comprises:
a fiberglass; and
a mineral aggregate including at least one of lime dust and granular ceramic material.
16. The method of claim 1 , wherein the asphalt binder further comprises a carboxyl additive.
17. The method of claim 1 , wherein the asphalt binder further comprises a styrene-butadiene type polymer.
18. The method of claim 1 , wherein the mixing is carried out in a high speed shear mill at 150° C. to 160° C.
19. 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.
20. 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.
21. The method of claim 20 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C.
22. The method of claim 20 , wherein the asphalt product has a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.
23. The method of claim 20 , wherein the asphalt product has a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C.
24. The method of claim 20 , wherein the asphalt product comprises from 0.1 to 10.0 wt. % of the bio-oil blend.
25. The method of claim 20 , wherein the bio-oil is from an oil derived from a source selected from the group consisting of fish, animal, vegetable, synthetic and genetically-modified plant oils, and mixtures thereof.
26. The method of claim 25 , wherein the bio-oil is a vegetable oil from a vegetable source selected from the group consisting of high erucic acid rapeseed, soybean, safflower, canola, castor, sunflower, palm, and linseed oil.
27. The method of claim 20 , wherein the bio-oil blend is a mixture of heat-bodied linseed oil (HBL) and partially hydrogenated heat-bodied linseed oil (PHBL).
28. The method of claim 20 , wherein the asphalt product has a specific gravity of 1.019-1.052.
29. The method of claim 20 further comprising:
blending a mineral aggregate with said improved asphalt product.
30. The method of claim 20 , wherein the asphalt product is in the form of asphalt concrete.
31. The method of claim 20 , wherein the asphalt product is in the form of an asphalt mixture.
32. The method of claim 31 , wherein the asphalt mixture comprises:
a fiberglass; and
a mineral aggregate including at least one of lime dust and granular ceramic material.
33. The method of claim 20 , wherein the asphalt binder further comprises a carboxyl additive.
34. The method of claim 20 , wherein the asphalt binder further comprises a styrene-butadiene type polymer.
35. The method of claim 20 , wherein the mixing is carried out in a high speed shear mill at 150° C. to 160° C.
36. 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.