A one of the measure of the rutting on airport asphalt pavements, creep tests and repeated triaxial compressive tests have been carried out for four types of asphalt concrete under three temperature conditions.
　It is confirmed that the residual strain of the gap graded asphalt concrete, in the range of small stresses, is less than that of another mixture using the same binder, but in the range of large stresses, the former is greater than the latter. It is also found that the residual strain of the mixture of which binder is rubber-resin-asphalt is less than that of the other mixtures without reference to stress levels.
　Furthermore, they are become clear that the creep compliances of asphalt concretes are well related to the stiffnesses of the asphalt bitumens, and they are approximated with generalized Voigt models.