LAUSR

Abstract This study aims to validate the applicability of the partial time–temperature superposition principle to simulate the behavior of thermorheologically complex modified asphalts. Six different asphalts were used to analyze this complexity using dynamic mechanical tests within the linear viscoelastic regime. The results showed that the complexity of polymer-modified asphalts is attributable to the formation of an entanglement network generated during the modification via physical and chemical processes based on the polymer type. It was also found that this network increased the modulus and decreased the viscous component at high temperatures, thereby improving the performance of modified asphalts. Despite the observed complex behavior, smooth and continuous master curves were obtained for viscoelastic properties different from the phase angle in frequency and time domains. For the phase angle and loss modulus master curves, the overall trend of the disjointed isothermal curves was simulated using a rheological model.