The Thermo-Rheological Behavior of Bitumen.

As a very important coating material in different applications, bitumen isa complex mixture of different chemicals. it is generally accepted thatthe principle of time-temperature superposition (tts) holds for thismaterial. in this study rheological measurements were carried out on four different bitumens. different representations of the experimental data were examined to check failure or holding of tts for this complex system. due to differences in dynamics of components, discontinuities were observed in (delta) versus g* curves for all four bitumens. it was concluded that the tts fails to be applied for the studied bitumens.