Abstract:Aging processes of colored paving asphalt conforming to GB 15180-94 standard were studied. The results show that the presented dynamics models can be used to describe the aging velocity of the two kinds of colored paving asphalt perfectly. After aging, asphaltene content increased, resins and aromatics content decreased as well as saturate content. As a result, the original colloidal structure of colored paving asphalt is destroyed, which deteriorates the colored paving performance. During aging, Gastel index (Ie) which is sensible to aging condition decreased with increase of aging temperature and aging time. As the same time, the exponential relationship between the change of viscosity and aging time was discovered. Both the gastel index and the aging index can be used to evaluate the aging resistance of the colored paving asphalt.