Rheological and chemical properties of field aged binders and their variation within the wearing course

Field ageing is investigated based on recovered binders. Fifteen sections were considered, consisting of unmodified and polymer-modified binders (PmB). Binders were recovered from the wearing course, after slicing the cores horizontally. To assess field and laboratory ageing tendencies, recovered binders were compared to a set of reference binders, tested before and after laboratory ageing. For three sites, the binders recovered from bottom...