Perpetual Asphalt Pavements - A Synthesis

The concept of perpetual pavements was introduced in 2000 by the Asphalt pavement Alliance (ApA). They defined a perpetual pavement as “an asphalt pavement designed and built to last longer than 50 years without requiring major structural rehabilitation or reconstruction, and needing only periodic surface renewal in response to distresses confined to the top of the pavement” (APA, 2002). At that time, it was recognized that many well-built, thick asphalt pavements that were categorized as either full-depth or deep-strength pavements had been in service for decades with only minor periodic surface rehabilitation to remove defects and improve ride quality.