Abstract: The quality and chemical composition of high quality road asphalt of Chunfeng Tahe were analyzed, and its PG grading and mixture performance were evaluated. The results showed that the samples have a good proportion of four components, showing moderate needle penetration index, high softening point and dynamic viscosity (60 ℃), large low temperature elongation, low wax content, large residual needle penetration ratio and residual low temperature elongation. The sample has good performances in temperature sensitivity, heat resistance aging performance, resistance to high temperature deformation, low temperature crack resistance and fatigue resistance, especially at low temperature crack resistance, belonging to PG 64-28 classification and is suitable for application in Xinjiang.

Key words: Chunfeng-Tahe asphalt, quality, composition, PG grade, mixture performance