Void reducing asphalt membrane composition, method and apparatus for asphalt paving applications
First Claim
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1. A method of reducing air voids in a discrete portion of an asphalt pavement which comprises:
- providing an asphalt membrane composition that comprises;
an asphalt binder,an elastomeric polymer,a wax modifier, andat least one of fumed silica or fumed alumina;
applying a discrete band of the asphalt membrane composition on a surface to be paved with a hot mix asphalt;
paving over the surface and discrete band of asphalt membrane composition with a hot mix asphalt to form a pavement; and
allowing the asphalt membrane composition to migrate into the hot mix asphalt and reduce air voids in the pavement by migrating into the hot mix asphalt.
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Abstract
A void reducing asphalt membrane composition for asphalt pavements that includes: an asphalt binder; an elastomeric polymer; a wax modifier; and 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 resistant to flow when applied and migrates into hot mix asphalt in the area of the longitudinal joint to reduce air voids to 7% or less and reduce water permeability. The composition becomes tack-free quickly after application. The composition bonds to asphalt, concrete, brick, stone and metal.
47 Citations
14 Claims
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1. A method of reducing air voids in a discrete portion of an asphalt pavement which comprises:
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providing an asphalt membrane composition that comprises; an asphalt binder, an elastomeric polymer, a wax modifier, and at least one of fumed silica or fumed alumina; applying a discrete band of the asphalt membrane composition on a surface to be paved with a hot mix asphalt; paving over the surface and discrete band of asphalt membrane composition with a hot mix asphalt to form a pavement; and allowing the asphalt membrane composition to migrate into the hot mix asphalt and reduce air voids in the pavement by migrating into the hot mix asphalt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification