Performance grade asphalt mix
AssigneeShelbyville Asphalt Company, LLC
InventorsMark R. Mathis, Bobby G. Upchurch, Albert B. Kinman
Life of this patent
Estimating the term…
Abstract
A Performance Grade asphalt mix composition is provided which contains i) an asphalt extender containing the residue from the purification process of used/waste lubricating oil; ii) liquid asphalt cement; iii) asphalt bearing waste materials; and iv) aggregates. The invention further relates to a method of preparing the asphalt composition and a paving composition containing same.
Claims15
A performance grade asphalt mix which comprises:
- i) an asphalt extender obtained as a residue in the refining of waste lubricating oil;
- ii) a liquid asphalt cement;
- iii) asphalt bearing waste materials;
- and iv) aggregates;
- wherein the asphalt extender is present in an amount of about 5% to about 50% by weight of the total liquid asphalt cement needed for the performance grade asphalt mix;
- the liquid asphalt cement is present in an amount of about 3% to about 6% of the total weight of the performance grade asphalt mix;
- the asphalt bearing waste materials are present in an amount of about 2% to about 45% of the total weight of the performance grade asphalt mix;
- and the aggregates are present in an amount of about 50% to about 95% of the total weight of the performance grade asphalt mix.
A process for making performance grade asphalt comprising blending an asphalt extender with liquid asphalt cement prior to combining with asphalt bearing waste materials and aggregates, wherein the asphalt extender is obtained as a residue in the refining of waste lubricating oil;
- wherein the asphalt extender is present in an amount of about 5% to about 50% by weight of the total liquid asphalt cement needed for the performance grade asphalt mix;
- the liquid asphalt cement is present in an amount of about 3% to about 6% of the total weight of the performance grade asphalt mix;
- the asphalt bearing waste materials are present in an amount of about 2% to about 45% of the total weight of the performance grade asphalt mix;
- and the aggregates are present in an amount of about 50% to about 95% of the total weight of the performance grade asphalt mix.
Dependencies are inferred from the claim text.