The Huet-Sayegh Model: A Simple and Excellent Rheological Model for Master Curves of Asphaltic Mixes

Abstract

The applicability of the Huet-Sayegh (H&S) model is shown for different asphalt mixes. The H&S model with only six parameters simulates in an excellent way the behavior of asphalt mixes in cycling tests over a very wide range of frequencies. Examples are given of these perfect fits for three completely different asphalt mixes. The only disadvantage is that the original model does not contain a viscous element for simulating the permanent deformation in contrast with the more familiar Burger's model. However, by adopting a linear dashpot in series with the H&S model an attractive alternative for the Burger's model is obtained which can be used over a large frequency range. Special attention is given to the mathematical operations connected to the use of the H&S model.