California's Department of Resources Recycling and Recovery (CalRecycle) established the Tire Derived Aggregate Technology Center (TTC) at the California State University, Chico on March 1, 2012. Since then, the TTC has provided many services to CalRecycle and its partners.
The purpose of TTC is to assist CalRecycle in increasing the use of TDA in civil engineering applications. Through the Center, the California State University, Chico Research Foundation shall provide support to both private and public engineers to gain acceptance of TDA as a viable civil engineering construction material and thereby create more opportunities for TDA projects.
The material testing services aspect of the TTC will support CalRecycle and local agencies by investigating and testing the engineering properties of TDA and rubberized asphalt concrete (RAC) that are necessary to ensure the performance of these materials in civil engineering applications.
Mission Statement
The Center has two major missions: one is to provide technical support to the State, local agencies, and professionals on how to use TDA in their projects; the other one is to develop educational materials for university education on using TDA in civil engineering applications.
TDA Projects Database
You can click on TDA Database(opens in new window) to access some major TDA projects, which have been built in California.
TDA Training Videos
You can click on video link to view an introduction to TDA.
You can click on video link to view TDA - A Sustainable Road Repair Solution.
You can click on video link to view TDA Environmental Testing and Earthquake Safety.
You can click on video link to view TDA as a low-cost vibration mitigation material.
TDA Online Training Program
CalRecycle and TTC have developed a TDA Online Training Program(opens in new window).
TDA Resources
You can click on Grant(opens in new window) page link to view the latest CalRecycle's TDA grant program.
You can click on CalRecycle(opens in new window) TDA information page link to view information about CalRecycle's TDA program.
You can click on TDA Brochure to view the latest CalRecycle's TDA Brochure.
You can click on this report link (PDF) to view a Mechanically Stabilized TDA summary and design guide.