Evaluation of Recycled Rubber in Asphalt Concrete – Dubuque County Author(s): Anderson, Chris, Iowa DOT Origin: Iowa Date: August, 1992 Categories: Performance Key Words: asphalt rubber cement, asphalt pavement, recycled tires, crumb rubber Summary: The Iowa DOT is evaluating the use of discarded tires in asphalt rubber cement. There have been five projects completed in Iowa. This project is located on US 151 north of Cascade to US 61 in Dubuque. One section consists of an asphalt rubber cement surface and a conventional binder and two sections contain both asphalt rubber cement surface and binder. The control section of conventional asphalt was completed this spring. Information included in this report consists of test results, construction reports, and cost comparisons.