A modified asphalt composition comprises or is produced from asphalt and phosphorous acid. The composition optionally further comprises one or more of an ethylene copolymer that comprises copolymerized units derived from ethylene and an epoxy-containing comonomer and a nonreactive polymer such as a styrene/conjugated-diene block copolymer. Further provided are processes for producing the composition in addition to products such as paving materials and roofing materials that comprise the compositions.

A binder composition for asphalt pavements that includes: an asphalt binder; an elastomeric polymer; a wax modifier; and optionally at least one of: i) fumed silica or fumed alumina; and ii) a saponified fatty acid and a resin acid gelling compound. The composition is applied as a tack coat and/or a stress absorbing membrane interlayer and is non-tracking.

A TBR pneumatic tyre comprising a carcass, a tread and at least one high elongation belt formed from a single cord with a laying angle of between 0.03 and 0.1 and comprising an axial extension CW wherein the ratio thereof to the axial extension of said tread (TW/CW) is between 1.1 and 1.4. The tread is made of a rubber compound comprising a cross-linkable unsaturated chain polymeric base comprising at least 50% by weight of natural rubber (NR), a mixture of fillers comprising (a) a carbon black having a surface area of between 99 and 170 m2/g and with a structure of greater than 120 cc/100 g, (b) a first silica having a surface area of less than 100 m2/g, and (c) a second silica having a surface area of more than 190 m2/g.

The present invention provides a polymer comprising conjugated diene monomer units and vinyl aromatic monomer units, wherein the polymer has a polymer block (A) comprising principally vinyl aromatic monomer units, and a polymer block (B) comprising conjugated diene monomer units and vinyl aromatic monomer units, and has a Bragg spacing of 27 nm or larger and 50 nm or smaller.

The present description relates to asphalt coating compositions, and methods of application, for coating asphalt paving surfaces. In particular, sprayable coating compositions are provided, and methods of application, for coating asphalt paving surfaces. In the coating composition, a lightweight aggregate material of sprayable particle size is stably suspended in a sprayable asphalt emulsion in an amount sufficient to increase the micro-texture surface roughness of the cured coating.

A method of waterproofing or damp proofing a protected member having a surface with a sulfur-extended elastomer asphalt binder composition uses a sulfur-extended elastomer asphalt binder composition that includes elemental sulfur, an elastomer and an asphalt binder. The method includes the steps of combining the elastomer with the asphalt binder maintained at an elastomer mixing temperature such that an intermediate asphalt binder mixture forms, and combining elemental sulfur with the intermediate asphalt binder maintained at a sulfur mixing temperature such that the sulfur-extended elastomer asphalt binder composition forms. The method also includes the step of applying the sulfur-extended elastomer asphalt binder composition to the surface of the protected member such that the sulfur-extended elastomer asphalt binder composition contacts, adheres to and forms a layer upon the surface of the protected member. The asphalt binder composition is applied at a temperature no greater than 145 C.

The present invention relates to an asphalt composition for road pavement, which is excellent in drying strength, strength after immersion in water, and strength after immersion in petroleum, a method for producing the same, and a road paving method.

[1] An asphalt composition for road pavement, containing asphalt, a polyester resin, and an aggregate, wherein the polyester resin is one subjected to melt-kneading and a ratio of the polyester resin is 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of the asphalt; [2] a method for producing an asphalt composition for road pavement, including a step of mixing asphalt, a polyester resin, and an aggregate at 130 C. or higher and 200 C. or lower, wherein the polyester resin used in the mixing step is one subjected to melt-kneading, and a ratio of the polyester resin is 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of the asphalt; and [3] a road paving method including a step of laying an asphalt composition obtained by the method of [2], thereby forming an asphalt paving material layer.

A method of installing an asphalt pavement, which method involves: identifying a surface to be paved; applying a non-tracking layer of binder composition to the surface; and permitting the application of an asphalt layer over the non-tracking layer of binder composition. The binder composition consists essentially of: at least one asphalt binder; at least one elastomer; and ethylene bis stearamide. In a further embodiment the binder composition consists essentially of: at least one asphalt binder; at least one elastomer; sulfur; and ethylene bis stearamide. The composition is applied as a tack coat and/or a stress absorbing membrane interlayer and is non-tracking.

A material composition for repairing and sealing asphalt and concrete surfaces is provided. The material composition for repairing asphalt and concrete includes an asphalt containing concentrate between about 25.0 wt. % and about 95.0 wt. %, an aggregate with amorphous aluminum silicate between about 15.0 wt. % and about 65.0 wt. % and reinforcements up to about 8.0 wt. %. The material composition for sealing asphalt and concrete includes a non-fiber asphalt emulsion between about 20.0 wt. % and about 60.0 wt. %, carbon black between about 0.5 wt. % and about 5.0 wt. %, an aggregate with amorphous aluminum silicate between about 1.0 wt. % and about 10 wt. %, a hydrophobic additive between about 0.1 wt. % and about 1.0 wt. %, and a coalescent between about 0.01 wt. % and about 0.5 wt. %.

A method of mixing a crosslinking blend in a portable tote for use to crosslink polymer modified asphalts. The method includes providing a portable tote, where the tote includes a tank having a sidewall, a top and a bottom portion. Fixedly positioned partially within the tank interior is an air mixing system that includes a hollow wand that has a distal and a proximal end. The proximal end of the wand exits the tank. The distal end of the tote is connected to at least one accumulator plate, where the accumulator plate is adjacent to the interior bottom portion of the tank. Stored in the interior of the tank is a crosslinking blend suitable for use to crosslink polymer modified asphalts. The method includes the steps of attaching a pulsed gas controller to the proximal end of the wand and coupling a source of compressed gas to the controller, then activating the controller to cause mixing of the crosslinking blend by pulsing gases into the crosslinking blend for a sufficient period of time. After, or during mixing, the crosslinking blend is discharged from the interior of the tank, and the controller is removed from the wand, leaving said wand attached to the tank.