Pooled Fund Partners

Institute for Transportation

Institute for Transportation
2711 South Loop Dr, Suite 4700
Ames, IA 50010-8664

Phone: 515-294-8103
Fax: 515-294-0467
E-mail: InTrans Communications

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The Illinois Department of Transportation (IDOT) joined TPF-5(213) as a state partner in 2010. In 2009, IDOT District 1 completed a project using post-manufactured recycled asphalt shingles (RAS) in the binder and surface layers in a stone mastic asphalt (SMA) application on Bishop Ford Expressway I-94. In 2010, IDOT worked closely with the Illinois Environmental Protection Agency (Illinois EPA) and Iowa State University (ISU) to develop the RAS Policy and a Special Provision for RASto address environmental laws and regulations along with technical protocols to provide a quality product for state and local agency use. The RAS specification allows a maximum of 5 percent RAS with100 percent passing the 3/8-inch sieve and 93 percent passing the #4 sieve and a maximum of 0.5 percent deleterious material.

IDOT goals for the study are in researching the binder properties of the recycled asphalt shingles (RAS) by using RAS with several PG grades and the benefits of the fibers used in stone mastic asphalt (SMA) applications.

In the summer of 2011, IDOT Region 1, completed a demonstration project on Interstate I-80 near Joliet between County Road 11 and US 30. The project included five percent RAS or a total of 20 percent binder replacement in an SMA application. The project utilized five percent RAS in both the binder and surface applications. The RAS replaced 100 percent of the fibers (no fiber machine was used for the project demonstration).

Illinois DOT Partners:

Matt Mueller, P.E.
Materials and Research
Phone: (217) 782-7200

Jim Trepanier
Materials and Research
Phone: (217) 782-9607


IDOT Tech Brief

The technical brief summarizes the results of Illinois DOT's demonstration project completed for TPF5-213.  The final report can be found under the Project Reports Section.