An Investigation of Field-And Laboratory-Compacted Asphalt-Rubber, SMA, Recycled and
Conventional Asphalt-Concrete Mixes Using SHRP Project A-003A Equipment
John Harvey, Carl Monismith and Jorge Sousa
Abstract
It has long been documented that different laboratory compaction methods can produce specimens with
different degrees of resistance to permanent deformation as measured in laboratory testing. The task of the
experiment described in this paper was to compare the performance of laboratory-compacted specimens of
asphalt-aggregate mix to field-compacted specimens, with the objective of estimating which laboratory
compaction method produces specimens most similar to those produced by field compaction. The
laboratory methods considered were Texas gyratory, rolling wheel, kneading, SHRP gyratory, and Marshall
hammer compaction.