Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

The purpose of this study is to verify the laboratory properties of the modified recycle asphalt mixtures as a asphalt pavement materials. Indirect tensile strength test at 25°C, dynamic modulus test at five different temperatures(-5°C, 5°C, 21°C, 40°C, 54°C) and repeated indirect tensile fatigue test at 25°C were conducted to evaluate the performance of the modified recycle asphalt mixtures as a asphalt pavement materials. The test results showed that the indirect tensile strength and toughness of the modified recycle asphalt mixtures was over the criteria of the specification of Korea Ministry of Land, Infrastructure, and Transport. Dynamic modulus of the modified recycle asphalt mixtures were bigger than those of the 13mm+PG64-22 typical asphalt mixtures used on Korea asphalt pavement. Repeated indirect tensile fatigue test showed that the fatigue crack resistance of the modified recycle asphalt mixtures was ten times bigger than that of PG64-22 asphalt mixtures. The results of the laboratory tests showed that the potential performance of the modified recycle asphalt mixtures is good enough as a asphalt pavement materials.