An Evaluation of Dense Graded Asphalt-Rubber Concrete in Minnesota - Final Report Author(s): Turgeon, Curtis Origin: Minnesota Date: November, 1991 Categories: Performance Key Words: Asphalt rubber Summary: The Minnesota DOT is continually investigating ways to improve the cold temperature performance of its asphalt concrete pavements. One reported method is to modify the asphalt binder with ground performance of its asphalt concrete pavements. One reported method is to modify the asphalt concrete pavements. One reported method is to modify the asphalt binder with ground reclaimed automobile and truck tire rubber. In 1984, a project on TH 7 was selected for the field trial of an asphalt of an cement dense graded concrete utilizing a product produced by Arizona Refining. Interesting results regarding the resilient modulus of the asphalt rubber samples were found. However, the formulation used provided little or no perceived benefits to the roadway at much higher costs. The high costs were due in part to the nature of the project. However, this appears to be a cumbersome and expensive procedure with the primary benefit being waste tire utilization.