Paving the Future

    Survey Says: Significant Increase in WMA Tons

    News / July 23, 2018

    During 2017, nearly 39 percent of all tons of asphalt pavement mixture produced in the U.S. used warm-mix asphalt (WMA) technologies to reduce production temperatures. That is just one of the findings of the asphalt industry’s use of reclaimed materials and warm-mix asphalt during the 2017 construction season. A total of 147.4 million tons of WMA was produced at reduced temperatures during 2017, a 777 percent increase since 2009.

    The survey found that more than 76.2 million tons of reclaimed asphalt pavement (RAP) and nearly 950,000 tons of reclaimed asphalt shingles (RAS) were used in new asphalt pavement mixes in the U.S. during 2017. At year-end 2017, about 103.5 million tons of RAP and RAS were stockpiled for future use across the country. Reclaiming RAP for use in future pavements saved nearly 50 million cubic yards of landfill space during 2017.

    The survey was conducted in the first quarter of 2018. Results from 238 companies with 1,158 plants in all 50 U.S. states, the District of Columbia, and American Samoa, along with data from state asphalt pavement associations for 32 states, were used to compile the report. Thank you to all the member companies that participated; NAPA will begin collecting data on the 2018 construction season survey in early 2019. Click here for a copy of the full survey report, including a state-by-state breakdown of data.

    Asphalt Pavement Industry Survey on Recycled Materials and Warm-Mix Asphalt Usage
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