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 invention relates to the use of an additive chosen from the compounds of formula (1) and the compounds of formula (2) as follows: in which A, B, E, Y, Z and d and j are as defined in the description, the anti-ageing additive being present in an amount of between 0.01% and 10% by weight, relative to the total weight of the bituminous product, in order to delay the ageing of the bitumen. The invention also relates to a composition comprising:—a bituminous product,—at least one anti-ageing additive as described above, and—at least one anti-oxidant agent, the anti-ageing additive being present in an amount of between 0.01% and 10% by weight, relative to the total weight of the bituminous product.

The invention refers to an asphaltic mixture conditioner comprising a bitumen, a polyol, a surfactant, a mineral acid and water. The invention further refers to a conditioned asphaltic paving mixture comprising bitumen, aggregate and the said asphaltic mixture conditioner.

The asphaltic mixture conditioner, used as an additive, solves problems of the prior art related to bituminous paving composition, which demand a prompt use of the asphalt compositions in situ. The additive contributes to preparation of a conditioned asphaltic paving mixture which may be storage at ambient temperature for longer periods, wherein the additive, at ambient temperature, may be added into a mix of aggregate and bitumen. Before being applied onto a surface, it is heated to a temperature range from 130° C. to 170° C., wherein all the necessary features to properly be applied onto the surface are maintained.

An asphalt composition comprising 0.1 to 10.0 wt.-% monomeric MDI based on the total weight of the composition.

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.

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.

A non-carboxylated styrene-butadiene copolymer, preparation method and use thereof are provided. The non-carboxylated styrene-butadiene copolymer is prepared by hot polymerization in the absence of acid monomers and is used in asphalt-based systems such as asphalt 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.

A bituminous composition comprising at least one bitumen base, at least one compound of general formula (I): Ar1-R.sub.1—Ar.sub.2 (I), and at least one compound of general formula (II): R.sub.2—(NH).sub.nCONH—X—(NHCO).sub.p(NH).sub.n—R′.sub.2 (II). The invention also concerns a process for the preparation of said bituminous composition.

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.