Fatigue Characteristics of Insitu Emulsified Asphalt Cold Recycled Mixtures

Abstract:

The splitting fatigue test was conducted on insitu emulsified asphalt cold recycled (EACR) mixture to inspect its attenuation characteristics of stiffness modulus as well as viscoelastic properties. The laboratory newprocessing EACR mixture was also tested for comparison. The failure criterions of two kinds of EACR mixtures were established based on fatigue testing results using damage mechanics theory. Moreover, Fatigue testing results indicate that more traffic loads will lead to more reduction in fatigue life of insitu EACR mixture and the fatigue life EACR mixture improves after being placed in service.

Key words:emulsified asphalt; cold recycled mixtures; stiffness modulus; fatigue characteristics