Evaluation of Fatigue Properties of Mixed Asphalt Based on Linear Amplitude Scanning Test

Abstract In order to study the effects of asphalt regenerators on fatigue properties mixed asphalt, linear amplitude scanning (LAS) test was designed and four types (non-petroleum NRA NRB, petroleum PR bio-oil based BR) were mixed. The VECD theory analysis method used evaluate miscible with different regeneration agents, new old asphalt. results showed that: process regeneration, peak value stress-strain curve will move lower right corner. factor in damage decreases slowly increase internal coefficient as degree aging increases. stress sensitivity SBS modified is than that matrix strain range LAS involving needs be expanded. It can seen best, BR second, are poor.