New Mexico Specifying 90% WMA Projects
May 02, 2014
New Mexico DOT issued the 2014 edition of The Standard Specifications for Highway and Bridge Construction. In it they define warm mix temperature as asphalt mix produced at 275F or less. When utilizing warm mix asphalt, ambient paving temperatures can be dropped 20F for open graded friction courses (OGFC) and 15F for dense graded mixes. New Mexico DOT specifies warm mix asphalt in approximately 90% of the projects let so far this year.