Patent ID: 11958974
Assignee: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
Field: Civil engineering (Other fields)
Classification: CPC C  E  Y | IPC C  E

Claim 18:
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.