This invention encompasses rubber modified asphalt cement compositions, as well as systems, apparatuses, methods for preparing, as well as methods for using rubber-modified asphalt cement compositions.

Disclosed herein are asphalt compositions. In some embodiments, the asphalt compositions can include asphalt, a polymer, and a basic salt such as aluminum sulfate. In some embodiments, the asphalt compositions can include asphalt, a polymer, and an inorganic acid such as phosphoric acid. The asphalt compositions can include asphalt in an amount of from 50 wt % to 99.9 wt %, based on the weight of the asphalt composition. In some embodiments, the asphalt compositions can include a styrene-butadiene copolymer in an amount of from 0.05 wt % to 10 wt %, based on the weight of the asphalt composition. The basic salt can be present in an amount of from 0.01 wt % to 5 wt %, based on the weight of the asphalt compositions. The acid can be present in an amount of from 0.005 wt % to 0.1 wt %, based on the weight of the asphalt compositions. Methods of making and using the asphalt compositions are also disclosed.

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 a binder composition comprising a bituminous binder and at least one rejuvenating agent. The present invention further relates to a method for evaluating the efficiency of a rejuvenating agent in a binder composition.

The invention concerns a method for the preparation of a bituminous composition BC comprising the following steps: a) having an intermediary hydrocarbonated composition IC comprising: a hydrocarbonated component selected among bitumen and oils, and a hydroxide XOH with X=Na or K, which represents from 15 to 50% by weight of the total weight of the intermediary hydrocarbonated composition IC, b) introducing the intermediary hydrocarbonated composition IC, into a composition HC of a bitumen, in particular chosen among paving grade bitumen as defined by EN 12591 and polymer modified bitumen as defined by EN 14023.

The intermediary hydrocarbonated composition IC as defined in the invention and its uses are other aspects of the invention.

Asphalt packets and methods of making and using asphalt packets are provided. For example, an asphalt packet can be provided that include asphalt that comprises an inner volume and a polymer film outer coating that encapsulates the inner volume of the asphalt. The polymer film outer coating can be non-tacky at ambient temperatures to permit stacking of a plurality of asphalt packets under weight without causing the packets to agglomerate.

A polymer-modified asphalt composition comprises or is produced from asphalt and a high-melt flow index ethylene co/terpolymer comprising copolymerized units derived from ethylene, an epoxy-containing comonomers, and optionally a third monomer selected from the group consisting of acrylates, methacrylates, vinyl esters, and the like. The modified asphalt composition may further comprise a nonreactive polymer, such as a styrene/conjugated-diene block copolymer, and a co-reactant, such as an acid or an acid anhydride. Further provided are processes for producing the polymer-modified asphalt composition, and paving and roofing materials that comprise the polymer-modified asphalt composition.

Disclosed is a method for determining a mixing temperature of an asphalt mixture which includes the following steps: S100, obtaining a test result of surface energy of hot-melt asphalt; S200, obtaining, according to a calculation formula for total adhesion work and in combination with the test result of the surface energy of the hot-melt asphalt, total adhesion work of an asphalt and aggregate interface at different mixing temperatures; S300, determining a temperature range corresponding to peak values of the total adhesion work of the asphalt and aggregate interface; and S400, calculating a median value of the temperature range determined in S300, so as to determine an optimum mixing temperature of the asphalt mixture.

The present invention relates to a process for the preparation of an asphalt mix composition, said process comprising: (1) providing an asphalt composition and heating said composition to a temperature in the range of from 110 to 200° C.; (2) providing a granular material and heating said material to a temperature in the range of from 110 to 240° C.; (3) providing one or more thermosetting reactive compounds; (4) adding the one or more thermosetting reactive compounds provided in (3) to the asphalt composition obtained in (1) and homogenizing the mixture for a duration in the range of from 2 to 180 s; (5) adding the mixture obtained in (4) to the granular material obtained in (2) and homogenizing the slurry for a duration in the range of from 5 to 180 s. Further, the present invention relates to an asphalt mix composition obtained or obtainable by said process and its use.

Asphalt-based compositions for use in the restoration of low-sloped roofs. Compositions are a unique combination of PG asphalts, elastomers, plastomers, plasticizers, and waxes having the unique physical property of providing a functional membrane that can be applied over existing roofing membranes and materials.