Inventors:
Rakesh Tripathi - Waco TX
Kirby W. Pickett - Woodway TX
Mansour Solaimanian - Austin TX
Thomas W. Kennedy - Austin TX
Assignee:
Texas Department of Transportation - Austin TX
International Classification:
C09D19500
Abstract:
Modified asphalt cement is produced by blending asphalt with up to about 20% waste toner recovered from laser printers, copiers, and the like. The blending is carried out at high shear and at temperatures above the melting point of the toner. The toner-modified asphalt cement, and asphalt concrete made from the modified cement, both display significantly improved strength and temperature resistance properties relative to unmodified asphalt and asphalt concrete.