The object of the present report is to clarify the evaporation cooling effect of the water-absorbing asphalt mixture pavement material. Three kinds of asphalt that has the function of water absorption and water retention are newly developed. The permeable asphalt and the three kinds of water-absorbing asphalts were used as the tested material. The surface of each tested material was shone by the solar or by the lamp. The temperature of each tested point and the amount of evaporation of the material's surface were measured. The evaporation cooling effect are examined from the experiment results.
