Road pavement and repair
AssigneeOwens-Corning Fiberglas Corporation
InventorsAlfred Marzocchi, Michael G. Roberts, Charles E. Bolen
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Abstract
The use of flake glass in road pavement and repair is disclosed. In particular, we disclose improvements in the formulations of asphalt aggregate wear surfaces, substrate layers and interface layers between the substrate and wear surfaces. In one embodiment we also employ an unsaturated monomer or an unsaturated elastomer.
Claims8
In a pavement construction including an upper wear course layer and an underlying substrate layer, the improvement comprising an intermediate membrane layer disposed between said wear course and substrate layers, said membrane being approximately 1/8 to 1/2 inch thick and composed of organic bituminous matrix and intermixed particles of glass flake in the range of 10 to 50% of bituminous matrix.
A pavement comprising:
- a wear course containing 88-95% sand and stone aggregate and 5-12% modified asphalt composed of the reaction product of 60.0 to 99.8% asphalt, 0.1 to 35% styrene monomer, and from 0.1 to 5.0% butadiene rubber;
- an underlying substrate layer serving as a base for the pavement;
- and
- an interface layer having a depth of between 1/8 inch to 1/2 inch thickness interposed between the wear course and the substrate layer composed of an asphaltic composition and intermixed glass flake embedded in the asphaltic composition.
Dependencies are inferred from the claim text.