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April 23, 2013

NAPA's 2011 RAP, RAS, & WMA Survey

NAPA, in partnership with the Federal Highway Administration (FHWA), is quantifying the use of RAP, RAS, and WMA through industry surveys. According to the latest data, during the 2011 construction season more than 66.7 million tons of RAP and 1.2 million tons of RAS were put to use in new pavements in the United States, saving taxpayers more than $2.2 billion. Also, about 19 percent of all asphalt produced in the country that year was made using warm-mix asphalt (WMA) technologies.

RAP: In 2011, RAP usage reached 66.7 million tons, a 7 percent increase from 2010 and a 19 percent increase from 2009. More than 99 percent of asphalt pavement reclaimed from roads was used in new pavements instead of going into landfills. In the survey, 98 percent of producers reported using RAP in their mixes for new construction, pavement preservation, rehabilitation, and other projects.

RAS: RAS usage also continued to climb, increasing to 1.2 million tons in 2011 — an 8 percent increase over 2010, and a 52.5 percent increase since 2009. Since 2009, RAS usage has been reported in 36 states. RAS includes both manufacturers’ scrap shingles and post-consumer roofing shingles.

WMA: In 2010, FHWA made warm-mix asphalt part of its Every Day Counts initiative to speed the deployment of technologies that can improve highway projects' quality, sustainability, and safety. In 2011, total WMA tonnage in the U.S. was estimated at about 69 million tons, a 67 percent increase from 2010 and a nearly 309 percent increase since 2009.  

Other tidbits from the survey:

  • Table of estimated and reported plant mix asphalt tons by state
  • Map of estimated average perentage of RAP by state
  • Table of states reporting RAS use
  • The SEAUPG states use the most WMA


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