Superposition principle to determine properties of bituminous mixtures in the time –temperature domain

Abstract

In this paper, it will be shown that several properties of asphaltic mixes fall within the domain of applicability of the time-temperature superposition principle. The exchangeability of not only the frequency and temperature (as often reported), but also loading speed and strain rate and temperature, allows application of a unique temperature susceptibility function for any asphaltic mix. This function is applicable, for elastic properties of asphaltic mixes e.g. flexural mix stiffness, as well as for inelastic properties e.g. compressive and tensile strength. An apparent advantage of this approach is the considerable reduction in testing programs.