Void reducing asphalt membrane composition, method and apparatus for asphalt paving applications
First Claim
1. A longitudinal asphalt pavement construction joint area for construction of pavements that comprises a first substrate that defines a surface to be paved, a hot mix application portion and a void reducing asphalt membrane composition provided between the first substrate and the hot mix application, the void reducing asphalt membrane composition comprising:
- an asphalt binder;
an elastomeric polymer;
a wax modifier; and
at least one of fumed silica and fumed aluminawherein the asphalt binder comprises 85 to 97 wt. % of the void reducing asphalt membrane composition, and wherein the at least one fumed silica and fumed alumina imparts lateral flow resistance and a non-tacky characteristic to the void reducing asphalt membrane composition.
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Accused Products
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.
42 Citations
25 Claims
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1. A longitudinal asphalt pavement construction joint area for construction of pavements that comprises a first substrate that defines a surface to be paved, a hot mix application portion and a void reducing asphalt membrane composition provided between the first substrate and the hot mix application, the void reducing asphalt membrane composition comprising:
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an asphalt binder; an elastomeric polymer; a wax modifier; and
at least one of fumed silica and fumed aluminawherein the asphalt binder comprises 85 to 97 wt. % of the void reducing asphalt membrane composition, and wherein the at least one fumed silica and fumed alumina imparts lateral flow resistance and a non-tacky characteristic to the void reducing asphalt membrane composition. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An asphalt pavement void reducing asphalt membrane composition that comprises:
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an asphalt binder; an elastomeric polymer; a wax modifier; and at least one of fumed silica and fumed alumina, wherein the asphalt binder comprises 85 to 97 wt. % of the void reducing asphalt membrane composition, and wherein the at least one fumed silica and fumed alumina imparts lateral flow resistance and a non-tacky characteristic to the void reducing asphalt membrane composition. - View Dependent Claims (9, 10)
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11. A method of forming a pavement longitudinal asphalt pavement construction joint which comprises:
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providing a first substrate that defines a surface to be paved; applying a band of a void reducing asphalt membrane composition on the first substrate, said void reducing asphalt membrane composition comprising; an asphalt binder; an elastomeric polymer; a wax modifier; and
at least one of fumed silica and fumed alumina,wherein the asphalt binder comprises 85 to 97 wt. % of the void reducing asphalt membrane composition, and wherein the at least one fumed silica and fumed alumina imparts lateral flow resistance and a non-tacky characteristic to the void reducing asphalt membrane composition; and providing a hot mix above the band of the void reducing asphalt membrane composition. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A void reducing asphalt membrane composition over which a hot mix asphalt is applied during an asphalt paving process which void reducing asphalt membrane composition comprises:
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an asphalt binder; an elastomeric polymer; a wax modifier; and
at least one of fumed silica and fumed alumina,whereby when a hot mix asphalt is applied over the void reducing asphalt membrane the void reducing asphalt membrane composition migrates upward into the hot mix asphalt, and wherein the at least one fumed silica and fumed alumina imparts lateral flow resistance and a non-tacky characteristic to the void reducing asphalt membrane composition to fill air voids and reduces water permeability in the hot mix asphalt. - View Dependent Claims (23, 24, 25)
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Specification