There is a strong need to re-utilize the materials composing demolished airport pavements in the reconstruction of pavements. As a follow-up of a previous report on the applicability of demolished concrete in the subbase of airport pavement, recycled asphalt mixtures are considered here. Several types of mixtures were assessed in laboratory tests in an effort to realize their use in the surface course, binder course and base course. These tests examined the mechanical properties of the asphalt mixtures, and both the physical and chemical properties of the asphalt recovered from the mixtures.
　As a result, the following conclusions were obtained:
(1)Although recycled asphalt mixtures have almost the same characteristics as new asphalt mixtures in terms of strength and resistance against stripping and rutting, they are much brittler.
(2)The physical properties of asphalt recovered from recycled asphalt mixtures are similar to those of new asphalt, but the recovered asphalt is appreciably aged due to the previous usage.
(3)Recycled asphalt mixtures are basically applicable to the binder course and the base course of airport pavements. Due to their strong tendency towards aging, however, they cannot be used as the surface course.