High-friction road patch
AssigneeAuburn University
InventorsRAYMOND L. POWELL, JASON NELSON
Life of this patent
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Abstract
A high-friction road patch may comprise an aggregate capable of providing sufficient friction between a road surface and vehicle wheel. In some embodiments, the patch may comprise a waterproof, asphalt overlay with a first layer of cured bitumen and calcined bauxite aggregate particles, a second layer of viscous bitumen and a reinforcement component, and a binder layer for bonding the overlay with the road surface. The resulting product may provide a sufficient skid resistance value in an overlay that is far less susceptible to or incapable of debonding as with prior art solutions.
Claims20
1) A layered, pre-fabricated overlay for enhancing road surface friction, comprising:
- a first layer composed of cured bitumen comprising aggregate particles at least partially embedded therein and exposed to contact with automobile tires;
- a second layer disposed beneath said first layer and comprising viscous bitumen;
- said second layer further comprising a reinforcement component selected from a group consisting of:
- a) fibrous material disposed within said viscous bitumen;
- b) a mesh screen encapsulated within said viscous bitumen;
- and, c) a combination of a) and b);
- and, a binder layer on an underside of the second layer for bonding the overlay with the road surface.
15) A method for enhancing road surface friction, comprising:
- providing a pre-fabricated overlay for application to the road surface, wherein the overlay comprises:
- a first layer composed of cured bitumen and aggregate particles at least partially embedded therein, wherein the first layer is exposed to contact with automobile tires;
- a second layer comprising viscous bitumen disposed beneath the first layer, the second layer further comprising a reinforcement component that is selected from a group consisting of:
- a) fibrous material disposed within said viscous bitumen;
- b) a mesh screen encapsulated within said viscous bitumen;
- and, c) a combination of a) and b);
- and
- a binder layer on an underside of the second layer for bonding the overlay with the road surface;
- and
- applying the overlay to the road surface.
20) A layered, pre-fabricated overlay for enhancing road surface friction, comprising:
- a first layer composed of cured bitumen comprising calcined bauxite aggregate particles at least partially embedded therein;
- a second layer disposed beneath said first layer and comprised of viscous bitumen and a reinforcement component comprising fibrous material;
- and
- a binder layer on an underside of the second layer for bonding the overlay with the road surface.
Dependencies are inferred from the claim text.