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Speaker: Barry L. Nunez
Session: Rubber Soul: Using Old Tires to Make Better Asphalt Roads
Description: Diamond B, an asphalt producer in Louisiana, uses crumb rubber
(ground rubber tires) as an additive to modify lesser performance grade (PG)
liquid asphalt and achieve properties of polymer modified asphalt. It is a practice
that is catching on in the industry. The modification brings the PG binder up to LA DOTD specs, allowing
the asphalt producer to meet higher specifications at lower cost. Every ton of asphalt uses one tire; in
sustainability terms, a million ton asphalt producer can remove a million used tires from possible landfill.
Session Takeaways:
-Get first-hand knowledge on how to invest in your plant and begin the practice of using crumb rubber.
-Learn about the possible economic, environmental, social, and quality benefits associated with
practicing sustainability through the use of crumb rubber to modify performance grade liquid asphalt.