Asphalt Definitions and Terms

Home Knowledge Base Asphalt Terms Open-Graded Asphalt Friction Course

Latest Posts

Corey Schwarz Named COO

TxDOT Letting Report 2026 April

Proposed Membership Dues Increase

Celebrating 20 Years of Texas Asphalt Magazine

TxDOT Letting Report 2026 March

Open-Graded Asphalt Friction Course

Open-graded asphalt friction course is a pavement surface course consisting of a high-void asphalt plant mix that permits rapid rainwater drainage through the course and out the shoulder. A large percentage of one-sized coarse aggregate characterizes the mixture. This course prevents tire hydroplaning and provides a skid-resistant pavement surface.