Abstract: Disclosed are binders and methods for making such binders with crude sterols. The crude sterols improve various rheological properties of the binders. The disclosure provides a method for slowing the aging rate of aged asphalt binder comprising adding a crude sterol to an asphalt binder, wherein the asphalt binder comprises both virgin asphalt binder, and reclaimed asphalt binder material comprising asphalt pavement (RAP), asphalt shingles (RAS) or combinations of RAP and RAS.

Abstract: Disclosed are asphalt and asphalt binders and methods for making such compositions with sterols. The sterols improve various rheological properties. Also disclosed are methods of determining the changes or improvements of various rheoloical properties.

Abstract: Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder emulsion with sterols.

Abstract: Disclosed are asphalt binder compositions and methods for making such compositions with pure sterol:crude sterol blends. The sterol blends improve various rheological properties.

Abstract: Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder with sterols.

Abstract: Disclosed are asphalt binder compositions that contain at least one sterol or stanol additive, or blends of sterols and stanol additives, wherein the sterol or stanol additive is derived from an animal waste or manure source such as swine manure. These sterol and stanol-based additives improve various rheological properties of the asphalt binder compositions showing reduced and/or mitigated aging characteristics.

Abstract: A polymer-modified emulsion used for rejuvenating or repairing deteriorated asphalt pavement includes an asphalt phase containing an asphalt and a biobased rejuvenating agent, and an aqueous phase including water and an emulsifying agent, and one or more polymers included in the asphalt phase, the aqueous phase or both.

Abstract: Cold-in-place asphalt recycling is disclosed. A foamed asphalt may be produced by injecting water and optionally compressed air into a hot asphalt stream. A lubricating surfactant may be added to the hot asphalt stream to improve performance. The foamed asphalt may be mixed with reclaimed material to provide a uniformly coated paving material that can compacted to a desired density.

Abstract: Disclosed are asphalt and asphalt binders and methods for making such compositions with sterols. The sterols improve various rheological properties. Also disclosed are methods of determining the changes or improvements of various rheoloical properties.

Abstract: Disclosed are asphalt binder compositions and methods for making such compositions with pure sterol:crude sterol blends. The sterol blends improve various rheological properties.

Abstract: Asphalt binder compositions and methods for making such compositions with pure sterol:crude sterol blends. The sterol blends improve various rheological properties.

Abstract: An acid modified asphalt binder is combined with an emulsifier solution to produce an emulsified asphalt binder. The acid modified asphalt binder may be formed by combining an asphalt binder, a phosphorous-based acid, and, optionally, a polymer modifier. The emulsifier solution may be produced by forming an aqueous solution of an amine and a phosphorous-based acid, which forms an aqueous solution comprising an amine phosphate. The emulsified asphalt binder may be combined with an aggregate to form a paving material. In other examples, the emulsified asphalt binder may be used alone, for example in a chip seal application, or in a diluted form, for example in a fog seal application.

Abstract: The present invention provides an asphalt paving composition including an essentially water-free, non-foamed warm mix asphalt binder composition modified with lubricating antistrip additives that can be mixed with uncompacted aggregate to provide a warm mix paving composition of the aggregate adequately coated with the essentially water-free, non-foamed binder and lubricating antistrip additive. This warm mix paving composition may be mixed at temperatures of 280° F. or lower and may be compacted at temperatures of 260° F. or lower that are below mixing and compacting temperatures of similar paving compositions that do not contain the disclosed lubricating antistrip additives.

Abstract: Methods of cleaning equipment such as hand tools dirtied by bituminous mixture. A biodiesel emulsion comprising biodiesel, water and emulsifier(s), is applied to the surface of the equipment for a period of time (e.g., at least about 15 minutes) and optionally agitated. The biodiesel emulsion produces cleaning properties comparable to straight biodiesel, at a cost reduction, due to the replacement of biodiesel with water.

Abstract: Methods of cleaning equipment such as hand tools dirtied by bituminous mixture. A biodiesel emulsion comprising biodiesel, water and emulsifier(s), is applied to the surface of the equipment for a period of time (e.g., at least about 15 minutes) and optionally agitated. The biodiesel emulsion produces cleaning properties comparable to straight biodiesel, at a cost reduction, due to the replacement of biodiesel with water.

Abstract: An acid modified asphalt binder is combined with an emulsifier solution to produce an emulsified asphalt binder. The acid modified asphalt binder may be formed by combining an asphalt binder, a phosphorous-based acid, and, optionally, a polymer modifier. The emulsifier solution may be produced by forming an aqueous solution of an amine and a phosphorous-based acid, which forms an aqueous solution comprising an amine phosphate. The emulsified asphalt binder may be combined with an aggregate to form a paving material. In other examples, the emulsified asphalt binder may be used alone, for example in a chip seal application, or in a diluted form, for example in a fog seal application.

Abstract: The present invention provides a functionally dry warm mix asphalt binder composition modified with lubricating agents or additives that can be mixed with aggregate and compacted at temperatures substantially below asphalt binder compositions that do not contain the disclosed lubricating additives.

Abstract: Methods of cleaning equipment such as hand tools dirtied by bituminous mixture. A biodiesel emulsion comprising biodiesel, water and emulsifier(s), is applied to the surface of the equipment for a period of time (e.g., at least about 15 minutes) and optionally agitated. The biodiesel emulsion produces cleaning properties comparable to straight biodiesel, at a cost reduction, due to the replacement of biodiesel with water.

Abstract: The present invention provides a functionally dry warm mix asphalt binder composition modified with lubricating agents or additives that can be mixed with aggregate and compacted at temperatures substantially below asphalt binder compositions that do not contain the disclosed lubricating additives.

Abstract: A polymer-modified emulsion used for rejuvenating or repairing deteriorated asphalt pavement includes an asphalt phase containing an asphalt and a rejuvenating agent, and an aqueous phase including water, an acrylic polymer or copolymer and an emulsifying agent.