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US 5,766,333 AGranted
Method for recycling and rejuvenating asphalt pavement
AssigneeThe New Paraho Corporation
InventorLarry A. Lukens
Life of this patent
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Abstract
A method for rejuvenating asphalt pavement includes milling and collecting a select thickness of asphalt pavement of a portion of an existing roadbed. A shale oil modified asphalt comprising between 5-25% shale oil modifier and 75-95% asphalt cement is provided. An aggregate comprising about 60-70% virgin aggregate and about 30-40% of the milled and collected asphalt is combined with the shale oil modified asphalt and then applied to a roadbed.
Claims12
A method for rejuvenating asphalt pavement comprising:
- (a) milling and collecting a select thickness of an asphalt pavement from a portion of an existing roadbed;
- (b) providing a shale oil modified asphalt comprising between about 5-25% by weight shale oil modifier and 75-95% by weight asphalt cement;
- (c) providing an aggregate comprising about 60-70% by weight virgin aggregate and about 30-40% by weight of the milled and collected asphalt pavement;
- (d) mixing the shale oil modified asphalt of step (b) and the aggregate of step (c);
- and
- (e) applying the mixture of step (d) to a roadbed.
3 more elements
Dependencies are inferred from the claim text.