ABSTRACT
This paper investigates whether an existing framework that predicts the changes of asphalt mixture properties as a result of changes in asphalt binder modulus caused by oxidative aging can be expanded to predict changes caused by the inclusion of recycled asphalt pavements (RAP). This study stipulates that mastercurves of mixtures of similar gradation and component material sources but with different RAP contents can coincide if shifted horizontally along the log frequency axis, such that the shift factor can be related to the change in binder modulus. Changes in mixture fatigue properties are also shown to be a result of changes in asphalt binder properties. Under the right conditions, this study shows that the properties of a mixture containing a certain RAP content and of a certain age level can be predicted from the short-term aged properties of a mixture containing no RAP, or vice-versa.
