Asphalt Paving Practice Guidelines
These guidelines present the recommended asphalt paving practices of
the Georgia Department of Transportation (GDOT). They were developed in
consultation with the paving and materials industries, through the
Georgia Partnership for Transportation Quality.
Types
of asphalt pavement covered include Bituminous Surface Treatments (BST)
and Hot Mix Asphalt (HMA) composed of the Department's 4.75, 9.5 and
12.5 Superpave mixes.
The guidelines do not address mix types for other
purposes—open-graded mixes (PEM and OGFC) and structural mixes (Stone
Matrix Asphalt and Types 19 and 25 Superpave). Likewise, different
guidance may apply in paving off-road pavements such as parking areas
and airport paving.
Questions regarding these topics may be referred to the State
Bituminous Construction Engineer at the GDOT Office of Materials and
Research (see section VII). Designs and specifications should be based
on a detailed assessment of each project and the availability and costs
of materials. The tables in the following sections represent the
applications and thicknesses normally specified, while providing
flexibility to address unusual constraints and conditions.