Asphalt Pavement Preservation 

An asphalt preservation treatment is typically applied within the first two to three years of a new road being installed. Based on traffic volumes and road conditions, additional treatments are applied every five to seven years. Bituminous surface treatments, or BSTs, are a low cost method to extend the life of this vital piece of infrastructure.

There is a wide range of techniques that can be used to preserve existing pavement surface. BSTs most often allow a drivable condition within hours on moderate- to low volume-roads. Some treatments can also rehabilitate an existing pavement. Usually, the term BST is used to describe a slurry seal or chip seal, but there are many different types of surface treatments. These treatments can be applied to an existing asphalt pavement structure, and represent a low cost alternative to typical asphalt repaving.