One of the main forms of distress in asphalt mixtures is the moisture damage.This phenomenon occurs mainly when the asphalt binder is separated from the stone aggregate due to water presence.Many studies have been performed to describe and measure the moisture damage resistance in asphalt mixtures.Despite the high number of research projects performed, this phenomenon has not been fully understood yet.A laboratory study was initiated to investigate the influence of the asphalt binder on moisture damage, due to the effect of water only.Physical (softening point -ASTM D36, viscosity -ASTM D-2171, AASHTO