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US 7,621,693 B2Granted
Asphalt fiber panels for pavement construction and repair
OwnerCharles Sanfield McDonaldinventor
Life of this patent
Estimating the term…
Abstract
The repair of pavement is performed by placing rigid waterproof asphalt fiber panels over the existing pavement before placing the asphalt concrete overlay on the pavement. The panels are cemented in place with liquid asphalt to the existing worn pavement and to the new asphalt concrete overlay; also the asphalt panels are similarly used in the construction of new pavement wherein the panels are placed between the two layers of the new asphalt concrete or between the asphalt concrete and the rock leveling course.
Claims2
An asphalt and fiber roadway panel consisting of:
- Upper and lower layers of fiber material forming upper and lower surfaces capable of bonding to tack coats, and receiving new asphalt overlays;
- An asphaltic impregnating layer disposed between and through the fiber layers,
- Wherein the diameter of the fibers and the thickness of the asphalt layer can be varied to form sheets that provide high shear strength and water barrier between pavement and sub-grade layers.
Dependencies are inferred from the claim text.