Airport is an important infrastructure for air transportation, for runway and taxiway pavement of which an asphalt mixture is usually selected because of the maintenance utility and the construction cost. An aggregate gradation is critical for characteristics of mixture, but in Japan now same gradation is used for roads and airports, so the characteristics of the load particular to airports, such as heavy load and high tire pressure, are not considered enough. For the estimation of mixture performance, such as rutting resistance, permeability and stripping resistance, several tests were made in this study.
According to the results of these tests, the performance of the mixture of the gradation near the boundary between lower limit of surface course and upper limit of binder course regulated in the “civil airport facilities standard specification (Japan CAB)” is relatively good among mixtures. It is necessary to take notice that tests are based on the limited aggregates. To establish more durable mixture, it is important to investigate gradations of other compaction degree and aggregates.

Key Words: asphalt mixture, aggregate gradation, wheel tracking test, test for permeability of asphalt mixture by pressurized water, standard and residual tensile strength test for immersed asphalt mixture