Asphalt emulsions, methods of forming asphalt emulsions, and composite pavement structures formed from the asphalt emulsions are provided herein. In an embodiment, an asphalt emulsion includes a base asphalt component, water, and an oxidized high density polyethylene. The base asphalt component is present in an amount of from about 15 to about 70 weight %, the water is present in an amount of at least about 25 weight %, and the oxidized high density polyethylene is present in an amount of from about 1 to about 20 weight %, where all amounts are based on the total weight of the asphalt emulsion. The oxidized high density polyethylene has an acid value of from about 5 to about 50 mgKOH/g. The asphalt emulsion is free of aggregate and other mineral materials.

Asphalt emulsions, methods of forming asphalt emulsions, and composite pavement structures formed from the asphalt emulsions are provided herein. In an embodiment, an asphalt emulsion includes a base asphalt component, water, and an oxidized high density polyethylene. The base asphalt component is present in an amount of from about 15 to about 70 weight %, the water is present in an amount of at least about 25 weight %, and the oxidized high density polyethylene is present in an amount of from about 1 to about 20 weight %, where all amounts are based on the total weight of the asphalt emulsion. The oxidized high density polyethylene has an acid value of from about 5 to about 50 mgKOH/g. The asphalt emulsion is free of aggregate and other mineral materials.

A sustainably constructed pavement and methods and apparatus for constructing the same are provided. A sustainable pavement may be constructed by creating a construction structure for a hot mix asphalt (HMA) pavement according to a pavement project; calculating a greenhouse gas (GHG) emission of the HMA pavement; performing a sustainable construction on the HMA pavement to modify one or more layers in the HMA pavement to form a sustainably constructed pavement; calculating a GHG emission of the sustainably constructed pavement; and obtaining a carbon reduction by comparing the GHG emissions of the HMA pavement and the sustainably constructed pavement.

The invention comprises a product comprising a continuous phase comprising water and a discontinuous phase comprising an asphalt composition and a vinyl acetate-ethylene copolymer. A method for using the composition is also disclosed.

The invention comprises a product comprising a continuous phase comprising water and a discontinuous phase comprising an asphalt composition and a vinyl acetate-ethylene copolymer. A method for using the composition is also disclosed.

Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder emulsion with sterols.

A system for re-surfacing a pavement surface includes a conduit configured to transfer a spreadable material and a material application and dispersal device (MADD) coupled in flow communication with the conduit. The MADD includes at least one material application mechanism (MAM) coupled in flow communication with the conduit. The system also includes a pressurization device coupled in flow communication with the conduit and the MADD. The pressurization device is configured to channel the spreadable material into the at least one MAM and to generate a positive pressure within the at least one MAM to facilitate delivering the spreadable material to the pavement surface.

The invention comprises a product comprising a continuous phase comprising water and a discontinuous phase comprising an asphalt composition and a vinyl acetate-ethylene copolymer. A method for using the composition is also disclosed.

A system and method for monitoring and adjusting a constant flow asphalt manufacturing process includes monitoring the ratios of recycled material to virgin material to minimize costs and adjusting the mixture in real time. Pulverized asphalt shingle (PAS) material may be used as a source of recycled asphalt oil and fed to a mixing drum with real-time monitoring while making real-time adjustments to supplement the asphalt with new asphalt oil to the mixer. The systems and methods may also be used for monitoring, metering, and supplementing recycled aggregate from recycled asphalt pavement (RAP) with new aggregate. The systems and methods may use one or more processors or programmable logic controllers (PLC) to meter the addition of new materials.

A system and method for monitoring and adjusting a constant flow asphalt manufacturing process includes monitoring the ratios of recycled material to virgin material to minimize costs and adjusting the mixture in real time. Pulverized asphalt shingle (PAS) material may be used as a source of recycled asphalt oil and fed to a mixing drum with real-time monitoring while making real-time adjustments to supplement the asphalt with new asphalt oil to the mixer. The systems and methods may also be used for monitoring, metering, and supplementing recycled aggregate from recycled asphalt pavement (RAP) with new aggregate. The systems and methods may use one or more processors or programmable logic controllers (PLC) to meter the addition of new materials.