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

Non-limiting embodiments of the present disclosure relate to a method comprising: obtaining asphalt shingle waste (ASW) and performing grinding, screening, and separating steps on the ASW. In some embodiments, granules are removed from the ASW. In some embodiments, the method transforms ASW into ASW powder. In some embodiments, the ASW powder is formed into a plurality of briquettes. In some embodiments, at least one of: the ASW powder, the plurality of briquettes, or any combination thereof is fed into a mixing process that results in an ASW powder filled coating.

The invention relates to a refiner (1) for treating composite products made from thermoplastic material(s), comprising an enclosure (3) with a cylindrical wall, defining a treatment chamber provided with at least one feed opening (5) for products to be treated and at least one outlet opening (5′) for treated products, and a cylindrical drum (6), mounted so as to be able to move in the cylindrical enclosure (3) and having a diameter smaller than that of the latter, the longitudinal axes of symmetry of the outer enclosure (3) and the inner drum (6) respectively being parallel to each other,

the refiner (1) being characterized in that it comprises a means for heating the treatment chamber (4) and in that the drum (6) is mounted in the outer enclosure (3) so that it is able to move in rotation about its longitudinal axis (A2) and so that its longitudinal axis (A2) is able to move along a circular path around the longitudinal axis of said enclosure (3), the two types of possible movements mentioned above being controlled by separate drive and/or actuation means allowing them to be effected selectively or in combination.

The present invention relates to asphalt compositions. The present invention provides for a sulfur rubber asphalt binder composition that includes a base asphalt having a softening point, elemental sulfur, and a recycled crumb rubber material. The crumb rubber material is combined with the base asphalt and the elemental sulfur to create the sulfur rubber asphalt binder composition. The crumb rubber material is present in the sulfur rubber asphalt binder in an amount effective to increase the softening point as compared to the softening point of the base asphalt.

The disclosure relates to methods of making asphalt concrete mixtures including reclaimed asphalt pavement (RAP). Variability in the fraction of binder that occurs in RAP that is able to melt and mix with virgin binder included in the concrete mixture previously made it difficult to select an appropriate amount of virgin binder. Methods described herein permit an asphalt concrete mix designer to determine the amount of virgin binder that can be combined with RAP and virgin aggregate in order to satisfy the minimum effective binder content of a job mix formula for such a concrete mix. The subject matter described herein thus permits more efficient use of RAP and permits use of RAP in higher amounts in asphalt concrete mixtures.

A bitumen having the properties of a Newtonian liquid is a mixture of a first oil pitch made of particles of soot and saturated oils and a second oil pitch made of aromatic oils and resins, characterized in that the first oil pitch has saturated oils at a content of at least 10% in wet weight and the second oil pitch has aromatic oils at a content of at least 10% in wet weight.

Disclosed herein are formulations for, and methods of making and using compositions formulated through the use of maltenes to lower the required asphalt emulsion content for recycling and stabilization of roadway materials as herein disclosed

This invention encompasses asphalt cement emulsions, as well as methods for preparing a pre-treated rubber-modified asphalt cement emulsions and methods for coating industrial surfaces using asphalt cement emulsions.

The present invention relates to an asphalt product that comprises an asphalt component and a plurality of pellets comprising a mixture of a ground tire rubber and an elastomeric polymer, where the density difference between the asphalt component and the plurality of pellets is less than 10%. The present invention further relates to a pellet comprising a ground tire rubber (“GTR”) and an elastomeric polymer mixed with the GTR, where the GTR has a density of less than 1.12 g/cm.sup.3. Also disclosed are methods of producing improved asphalt and paving a surface.

The present invention relates to polymer-modified bitumen, to a process for production thereof and to the use thereof for asphalt.