what is rap and ras in asphalt
Page 1. RAP, RAS, WMA Survey 2012. The National Asphalt Pavement Association is working with the Federal Highway Administration to determine the amount. of hotÂ­mix asphalt (HMA), warmÂ­mix asphalt (WMA), reclaimed asphalt pavement (RAP) and reclaimed asphalt shingles. (RAS) being produced and used in each state.