Stone Matrix Asphalt has been used for over 20 years in parts of Europe and Scandinavia. Recently, it has gained more recognition in the United States. The mixture has been successful due in part to its durability. This durability is provided by a mortar that consists of asphalt binder, fine aggregate, mineral filler, and a stabilizing additive.

This paper details research aimed at applying the Superpave binder test methods and specifications to SMA mortars. It was found that the use of the Dynamic Shear and Bending Beam Rheometers does seem to be viable with mortars.

Data obtained with the Dynamic Shear and Bending Beam Rheometers suggests that specifications for SMA mortars can be established if the current Superpave binder specifications related to these two pieces of equipment are multiplied by a factor of 5.