Compaction is a crucial topic for asphalt mixtures. In fact, the success of mix design depends on the effectiveness of compaction and its understanding is of paramount importance as part of the comparative assessment of different mixtures. Furthermore, mixtures with high compaction characteristics require lower energies to be employed during placement on site. The main objective of this thesis was to investigate polymer-modified asphalt (PMA) mixtures – obtained by using different additives and by conveniently varying binder content and aggregate skeleton – characterized with respect to their compaction characteristics. Several PMA samples were prepared by using three type of additives, two different binder content and two granulometric curves.