Vol. 3, No. 3

Dedicated to encouraging greater usage of high quality, cost effective asphalt pavements containing recycled tire rubber.

Fall, 1999

California and Arizona team up to share A-R technology

A series of meetings, tours, and workshops between Caltrans and ADOT promises to bring the best of the two leading Asphalt-Rubber states together as a guide for new states in the successful utilization of scrap tire rubber in asphalt pavements.

Pictured above in a Caltrans hardhat, George Way, ADOT pavement services engineer, confers with the "RAC & Roll Tour" leader Gary Hildebrand, Caltrans headquarters maintenance, about the A-R rehabilitation of the 405 Freeway in Orange County, California. The project, constructed by Silvia Construction in 1996, is a I 7/8" mill and fill gap-graded mix with a 7.8% binder by dry weight of mix. It was one of nine projects reviewed in the Southern California portion of the four-day tour cosponsored by Caltrans and RPA.

At left, Way shows the "before "photos of the I-40 SHRP test sections in the high mountain country near Flagstaff, AZ to LeRose Lane, Caltrans Dist 2 materials engineer, and Helen Hairapetian, Caltrans Dist 7 maintenance engineer.

All the synergistic efforts of Caltrans and ADOT are bound to improve the quality of the product (Asphalt-Rubber) and its performance."

George Way, ADOT

"As a result of working with our sister agency, ADOT and the Rubber Pavements Team, Caltrans is stepping up its use of Asphalt-Rubber. We see Asphalt-Rubber as providing extended pavement life and a smoother, quieter ride as well as utilizing more of the state's discarded tires."

Larry Orcutt, Caltrans