Provided herein are asphalt compositions comprising asphalt, a carboxylated copolymer, a polyalkyleneimine, and a photoinitiator. The carboxylated copolymer present in the asphalt compositions can be a latex composition derived from a carboxylated styrene-butadiene copolymer. The carboxylated copolymer includes from 0.5% to 25% by weight carboxylic acid monomers. The carboxylated styrene-butadiene polymer and the asphalt can be present in a weight ratio of from 1:99 to 1:10. The polyalkyleneimine present in the asphalt compositions can be in an amount of greater than 0% to up to 10% by weight of the asphalt composition. The photoinitiator can include benzophenone and/or a derivative thereof. Tack coats meeting ASTM-D-977 standard comprising the asphalt compositions disclosed herein are also provided. The tack coat can have a tack-free time of 10 minutes or less. Methods of producing the asphalt compositions and tack coats are also disclosed.

Provided herein are asphalt compositions comprising asphalt, a carboxylated copolymer, a polyalkyleneimine, and a photoinitiator. The carboxylated copolymer present in the asphalt compositions can be a latex composition derived from a carboxylated styrene-butadiene copolymer. The carboxylated copolymer includes from 0.5% to 25% by weight carboxylic acid monomers. The carboxylated styrene-butadiene polymer and the asphalt can be present in a weight ratio of from 1:99 to 1:10. The polyalkyleneimine present in the asphalt compositions can be in an amount of greater than 0% to up to 10% by weight of the asphalt composition. The photoinitiator can include benzophenone and/or a derivative thereof. Tack coats meeting ASTM-D-977 standard comprising the asphalt compositions disclosed herein are also provided. The tack coat can have a tack-free time of 10 minutes or less. Methods of producing the asphalt compositions and tack coats are also disclosed.

The present disclosure includes systems and methods for applying a coating system to a surface. An example method includes spraying an asphalt emulsion onto a surface at a rate of between about 0.12 and 0.20 gallons per square yard, the asphalt emulsion having: an asphalt blend comprising gilsonite, wherein at least a portion of the gilsonite is modified to possess a positive charge; one or more polymers, and one or more surfactants. The method may include applying a fine aggregate onto the asphalt emulsion. The fine aggregate may be applied at a rate of 2.5 pounds per square yard. In such an aspect, the asphalt emulsion may be sprayed at a rate of about 0.18 gallons per square yard, and the asphalt emulsion may contain about 56% solid asphalt residues by weight of the asphalt emulsion. In another aspect the fine aggregate may be applied at a rate of about 1.25 pounds per square yard, the asphalt emulsion may be sprayed at a rate of about 0.17 gallons per square yard, and the asphalt emulsion may contain about 37% solid asphalt residues by weight of the asphalt emulsion.

An asphalt binder includes an asphalt and an adhesion promoter composition. The adhesion promoter composition includes a vinyl acetate-ethylene (VAE)-based redispersible polymer and a wetting agent. The wetting agent includes at least one selected from the group consisting of: polyethylene glycol phenyl ether, polyethylene glycol higher alkyl, ether dialkyl sulfosuccinate, alkyl amine, alcohol amine, polyethyleneimine, and sorbitan aliphatic ethylene oxide adduct. Further, the wetting agent is included in an amount ranging from 0.5 to 45 percent by weight (wt %) with respect to the total weight of the adhesion promoter composition.

The world's natural asphalts are thermoplastic and coalescent in nature. After removing its water content, the resulting refined asphalts flow, coalesce, its mineral matters sediment when used in blends, and therefore could only be used with specialized road-paving equipment. Three methods are presented here to solve these problems. Method One gives a new way of packaging the natural and refined asphalts in pellet-form. Method Two uses water surface to stop the pellets of natural or refined asphalts from coalescing. Method Three uses water to blend the natural or refined asphalts, producing powders and pellets which do not flow or coalesce. In all methods, the processed asphalts are packaged for use on conventional road-paving equipment, without loss in performance when compared with the refined asphalts.

The present invention relates to elastomeric polymer fiber reinforced asphalt cement concrete for use in a variety of applications. In particular, the reinforcement fibers are effective to reduce or preclude voids and/or cracks formed in the asphalt upon placement and to render a self-healing property to the placed asphalt.

The present invention relates to elastomeric polymer fiber reinforced asphalt cement concrete for use in a variety of applications. In particular, the reinforcement fibers are effective to reduce or preclude voids and/or cracks formed in the asphalt upon placement and to render a self-healing property to the placed asphalt.

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. %.

Asphalt binders are modified using fractional products from waste tire pyrolysis, using an initial step of i) at least partially pyrolyzing, separately from such asphaltic binder, whole rubber articles or size-reduced rubber particles to provide one or more pyrolyzed rubber fractions including a pyrolyzed oil fraction having a selected minimum initial boiling point or flash point, and ii) removing some or all polycyclic aromatic hydrocarbon (PAH) compounds from such pyrolyzed oil fraction to provide a reduced-PAH and preferably translucent pyrolyzed oil fraction that may be combined with an asphaltic binder to provide a modified asphalt composition.

A kit of parts suitable to form a waterproofing membrane consisting of a first component A including or consisting of a) 5-60 mass parts, preferably 30-60 mass parts, more preferably 45-55 mass parts, of a hydraulic binder, b) 0.5-15 mass parts, preferably 1-5 mass parts of at least one synthetic polymer, c) 20-80 mass parts, preferably 30-50 mass parts of aggregates, and d) optionally further additives and a second component B including or consisting of an aqueous emulsion of bitumen.