Iowa State University Research Foundation Inc

Joseph Herbert Podolsky

Eric William Cochran

Nacu Hernandez

Ronald Christopher Williams

Austin Hohmann

Michael Forrester

Mohamed Elkashef

R Christopher Williams

Conglin Chen

Paul Ledtje

Theodore Huisman

Ashley F Buss

Irvin Pinto

Maxwell D Staver

Baker W Kuehl

Provided herein are an emulsified asphalt product and an emulsified coating product. Both emulsified products contain one or more rejuvenators of formula (I) or formula (X). The emulsified asphalt product is useful for improving the performance of aged or brittle resinous binders in paving applications while the emulsified coating product is similarly useful in roofing applications. Also provided herein is a treated bituminous pavement where the performance grade varies with depth.

Maintenance treatments useful for improving the performance of aged or brittle resinous binders in paving or roofing

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.

Rejuvenation of vacuum tower bottoms through bio-derived materials

The present application is directed to an asphalt binder composition comprising:

Biosolvents useful for improved asphalt products utilizing recycled asphalt pavement or other brittle asphalt binders such as vacuum tower bottom

The present invention relates to relates to a method of producing an improved asphalt. This method includes providing an asphalt binder and providing a compound of formula (I): as described herein. The asphalt binder is mixed with the compound of formula (I) under conditions effective to produce an improved asphalt. Also disclosed are an asphalt product and a method of making asphalt material.

Asphalt products and methods of producing them for rejuvenation and softening of asphalt

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&#xb0; C. to 85&#xb0; C. and/or a viscosity of 0.15 Pa&#xb7;s to 1.50 Pa&#xb7;s at a temperature ranging from 120&#xb0; C. to 165&#xb0; C. The present invention further relates to methods of producing an asphalt product and methods of applying an asphalt product to a surface.

The present invention relates to a method of producing an improved asphalt. The method involves providing an asphalt and providing a compound of formula (I), as described herein. The asphalt is mixed with the compound of formula (I) under conditions effective to produce an improved asphalt. Also disclosed are an asphalt product and a method of making asphalt material. The invention further discloses a method of producing an improved asphalt comprising providing a polymer modified asphalt and providing a compound of formula (IIa) or formula (II). The polymer modified asphalt is mixed with the compound of formula (IIa) or formula (IIb) under conditions effective to produce an improved asphalt, which is yet another aspect of the present invention. 

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Ames, IA, United States of America

Joseph Herbert Podolsky