Improving the Selection of Virgin Binders for Recycled Hot Mixtures in Ontario

The design of Recycled Hot Mixtures (RHM) in the United States is based on the guidelines provided by the National Cooperative Highway Research Program (NCHRP) Report 452. However, the extreme climatic characteristics in Canada require a validation on the selection of the virgin binders especially for Superpave Surface layer mixtures. This paper shows the results of a laboratory characterization of twelve conventional Superpave 12.5 mm …