TIME-TEMPERATURE SUPERPOSITION PRINCIPLE FOR ASPHALT CONCRETE WITH GROWING DAMAGE IN TENSION STATE

It is known that asphalt concrete in its linear viscoelastic range is thermorheologically simple. This paper presents the experimental/analytical research that demonstrates the validity of the principle of time-temperature superposition even with growing damage and viscoplastic straining by conducting constant crosshead rate tests on specimens that were pulled apart in tension until failure. Direct benefits and applications from this finding include reduction in testing program conditions, development of strength and corresponding strain mastercurves as a function of reduced time, a methodology for the prediction of stress-strain curves for any given crosshead strain test, and simplification of thermorheological analysis of pavement structures.