Howard, I. and Doyle, J.
Green Streets, Highways, and Development 2013. Reston: ASCE, 2013. pp. 106-116.
A number of developments have occurred recently to improve asphalt's sustainability. During this time, the asphalt industry has increased the number of mix options arguably more than any other time in history. This ever-increasing list of options emphasizes the need for performance testing as opposed to more traditional reliance largely on volumetric properties. A key area related to performance testing is comparing laboratory mixing and compaction to plant mixing and field compaction. Therefore, the primary objective of this paper was to assess differences between laboratory and field compaction for plant-mixed asphalt using wheel tracking. A total of 398 specimens were available for this assessment, some of which were field compacted cores from a single lift that was approximately 70 mm thick. Having field compacted cores from a single lift of suitable wheel tracking thickness was a key component of this paper. A secondary objective of this paper was to assess differences between laboratory and plant mixing using wheel tracking; a modest number of specimens were available for this purpose. This paper found no meaningful rut depth differences for laboratory and field compacted materials for one wheel tracker, but did find potentially meaningful differences for a second wheel tracker.