Glossary

Thin HMA Overlay

Used to improve the functional surface characteristics of the concrete pavement including enhancing friction and reducing noise. Consists of open or gap-graded aggregates and rubberized or polymer-modified asphalt layer (0.4 to 0.8 in. thick) well bonded to the concrete surface.

Also called: Thin Overlay, Functional Overlay, Ultra Thin Bonded Wearing Course