Through rutting test for asphalt treated base mixtures with nine types of gradation and three types of asphalt,rut-resistance property of asphalt treated base mixtures was studied systematicly.

Through Marshall soaking test and freeze-thaw split test comparative experiments study is made on the water stabilities of asphalt treatment base mixture with various gradations,so the influences of gradation of aggregate on the water stabilities of mixtures are analyzed,which has a certain reference value for asphalt treated base design.

Based on the immersion Marshall stability test and freeze-thaw splitting test,water stabilities of asphalt treated base mixtures with different aggregates gradation and asphalt are studied systematicly.

The design of asphalt stabilized macadam foundation based on mechanics method;

Experiment study on the modulus of hard asphalt stabilized macadam

Based on the composing characteristics of materials(ATB-30) and the application practice of asphalt stabilized macadam base in Zhashui-Xiaohe expressway, the technical standard of raw and proce- ssed materials, materials composition design, the construction technique and construction quality control key points of ATB-30 were studied and analyzed.