Dive summary:

• Using 10% rubber in asphalt binders raises performance and lowers cost for the paving material, according to a study conducted by the National Center for Asphalt Technology.
• The study found that smaller-sized rubber powder particles, which yield a larger total surface area, work best in the binding mix.
• Research found that asphalt using ground rubber needed less maintenance, was quieter and shortened vehicle braking distances.

From the article:

"Ground tire rubber is a product that provides long-term supply and is a cost-effective and competitive way to increase the robustness of asphalt, while also serving as a productive outlet for end-of-life tires," said Peter Wu, P.E., Ph.D. from the Office of Materials and Research at the Georgia DOT. ...