The Tire Industry Association (TIA) has issued a Statement of Work on Tire-Derived Aggregate (TDA), emphasizing its performance, applications, and environmental advantages. TIA said Tire-Derived Aggregate use provides a lightweight, free-draining solution. It’s made from recycled tires and is meant to enhance infrastructure projects, including roads, retaining structures, and stormwater systems.
TIA’s initiative encourages engineers, public agencies, and private-sector stakeholders to adopt TDA as a sustainable alternative for geotechnical challenges.
“All TDA applications identified in the Statement of Work meet ASTM D6270-B standards,” said Dick Gust, CEO of TIA. “This document serves as both a technical resource and a call to action for wider adoption of TDA in infrastructure projects across the country.”
TIA said TDA improves subgrade drainage and prevents frost heave in road construction while extending pavement life. As a lightweight backfill for retaining walls and bridge abutments, TDA reduces lateral earth pressure and enhances thermal insulation. For stormwater management, TDA offers high water storage capacity and contaminant filtration, reducing urban runoff and flood risks, TIA said.
TIA said TDA use provides a critical market for end-of-life tires, diverting millions from landfills each year.
To access the full TDA Statement of Work, visit here.
