Void reducing asphalt membrane composition, method and apparatus for asphalt paving applications

• US 10,364,535 B2
• Filed: 02/14/2019
• Issued: 07/30/2019
• Est. Priority Date: 03/09/2015
• Status: Active Grant

• Current Assignee: Heritage Research Group, LLC
• Original Assignee: Heritage Research Group
• Inventors: Kriech, Anthony J., Wissel, Herbert L., Reece, Timothy P., Exline, Marvin Keller
• Primary Examiner(s): Addie, Raymond W
• Application Number:
  US16/276,214
• Publication Number:
  US 20190177925A1
• Time in Patent Office: 166 Days
• Field of Search: 404 75, 404111, 404118
• CPC Class Codes: C08K 2003/2227 of aluminium
• CPC Class Codes: C08K 3/013 Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 3/36 Silica
• CPC Class Codes: C08K 5/09 Carboxylic acids; Metal salts thereof; Anhydrides thereof
• CPC Class Codes: C08L 101/12 characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity liquid crystal materials or compositions C09K19/00
• CPC Class Codes: C08L 2555/50 Inorganic non-macromolecular ingredients
• CPC Class Codes: C08L 2555/60 Organic non-macromolecular ingredients, e.g. oil, fat, wax or natural dye
• CPC Class Codes: C08L 2555/80 Macromolecular constituents
• CPC Class Codes: C08L 2555/84 Polymers comprising styrene, e.g. , polystyrene, styrene-diene copolymers or styrene-butadiene-styrene copolymers
• CPC Class Codes: C08L 91/06 Waxes
• CPC Class Codes: C08L 93/00 Compositions of natural resins; Compositions of derivatives thereof of polysaccharides C08L1/00 - C08L5/00; of natural rubber C08L7/00
• CPC Class Codes: C08L 95/00 Compositions of bituminous materials, e.g. asphalt, tar, pitch
• CPC Class Codes: E01C 11/02 Arrangement or construction of joints for pavings consisting of prefabricated units E01C5/00; Methods of making joints machines therefor E01C23/02, E01C23/09; removable joint shutterings E01C23/021; Packing for joints sealing joints not restricted to road or airfield paving E04B1/68
• CPC Class Codes: E01C 11/24 Methods or arrangements for preventing slipperiness or protecting against influences of the weather measures taken in connection with the foundation E01C3/06; paving elements with anti-slip inlays E01C5/22; aggregates resisting to grinding E01C7/085, E01C7/142, E01C7/182; specially for surface layers E01C7/35; reinforcements extending up to the surface E01C11/16, E01C11/18, E01C11/185; drainage E01C11/22; windscreens E01F7/02; snow fences E01F7/02; combating fog E01H13/00
• CPC Class Codes: E01C 7/18 of road-metal and bituminous binders for surface treatments except for penetration coverings, or for thin surface layers E01C7/353; bituminous mixtures C08L95/00
• CPC Class Codes: E01C 7/185 Isolating, separating or connecting intermediate layers, e.g. adhesive layers; Transmission of shearing force in horizontal intermediate planes, e.g. by protrusions E01C7/187 takes precedence; adhesive layers for materials E01C7/35
• CPC Class Codes: E01C 7/30 of road-metal and other binders, e.g. synthetic material , i.e. resin
• CPC Class Codes: E01C 7/32 of courses of different kind made in situ
• CPC Class Codes: E01C 7/325 Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses sliding layers E01C7/34

Abstract

A method of forming a pavement construction joint that involves dispensing a band of a void reducing joint composition on a substrate using at least one spray application vehicle, wherein the band comprises a width of about 4 to about 24 inches. A paving pass is applied over the band of joint composition, wherein the paving pass is positioned against an edge of a previously laid portion of pavement to form a pavement construction joint having a volume of air voids. At least a portion of the joint composition migrates upward to reduce the volume of air voids. 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.

Claims

1. A method of forming a pavement construction joint, comprising:

dispensing a band of a void reducing joint composition on a substrate using at least one spray application vehicle, wherein the band comprises a width of about 4 to about 24 inches and a sufficient thickness to permit migration upward into a paving pass positioned over the band to reduce an air void volume in such paving pass;

permitting the application of two paving passes to form a pavement construction joint having a volume of air voids, wherein the pavement construction joint is positioned over the band; and

allowing at least a portion of the joint composition to migrate upward into the two paving passes along the pavement construction joint to reduce the volume of air voids.

2. The method of claim 1, wherein the substrate comprises a pre-existing pavement roadway.

3. The method of claim 1, wherein the void reducing joint composition comprises at least one asphaltic binder, at least one elastomeric polymer, at least one thickener, and at least one additive to reduce tackiness.

4. The method of claim 1, wherein the band of joint composition comprises a thickness of about 1/16 to about ⅜

inch.

5. The method of claim 1, wherein the substrate comprises at least one of an asphalt concrete, a cement concrete, a milled asphalt concrete, a brick surface, or a chip seal surface.

6. The method of claim 1, wherein the substrate comprises a milled asphalt concrete.

7. The method of claim 1, wherein the joint composition is resistant to lateral flow across the substrate.

8. The method of claim 1, wherein the void reducing joint composition consists essentially of at least one asphaltic binder, at least one elastomeric polymer, at least one thickener, and at least one additive to reduce tackiness.

9. The method of claim 8, wherein the at least one elastomeric polymer comprises a styrene-butadiene-styrene polymer.

10. The method of claim 8, wherein the joint composition comprises about 85 to about 97 wt. % of the least one asphalt binder.