The National Asphalt Pavement Association (NAPA) has published the results of its 2024 Asphalt Pavement Industry Survey on Recycled Materials & Warm-Mix Asphalt Usage.

These results reflect the 2024 construction season and how asphalt mixture producers have a strong record of employing sustainable practices and continue to increase their use of recycled materials and warm-mix asphalt (WMA). The use of recycled materials, particularly reclaimed asphalt pavement (RAP) and reclaimed asphalt shingles (RAS), conserves raw materials and reduces overall asphalt mixture costs. WMA technologies can also improve compaction at reduced temperatures—ensuring pavement performance and long life, conserve energy during production operations, and improve conditions for workers.

The objective of this survey, first conducted for the 2009 and 2010 construction seasons, was to quantify the use of recycled materials, primarily RAP and RAS, as well as the use of WMA technologies by the asphalt pavement industry.

Key Findings:

• RAP: Asphalt mixture producers remain the country’s most diligent recyclers, with more than 96% of asphalt mixture reclaimed from old asphalt pavements being put back to use in new asphalt pavements and the remaining 4% being used in other civil engineering applications.
  
  
• RAS: The total estimated amount of RAS stockpiled nationwide at the end of the 2024 construction season was about 1.44M tons, a 22.5% increase from 2023.
  
  
• WMA Technologies: Mixtures produced with WMA technologies made up 40.2% of the total estimated asphalt mixture market in 2024.

Read the Report