Журнал гражданской и экологической инженерии

Effect of Thermal Cycles on Creep Behavior of Bituminous Binder in Hot Regions

Abstract

Bachir Glaoui, Mahdjoub Bendjima, M’hamed Merbouh and Martin Van de Ven

This research is devoted on the study of creep behavior of asphalt binder in hot region. This binder was subjected to thermal cycles due to the variation of temperature from day to night. These cycles produce a heating-cooling phenomenon. To evaluate the effect of climate change in laboratory, it was used the rheometer DSR, and compare the results found with the nine sample. These thermal cycles led to aging and therefore hardening of the binder. Thus, the proposal of a rheological model that can represent the curves obtained experimentally, where it is able to describe the creep behavior of binders tested. It is proposed a new model that correlates well with the experimental curves, it is called A+2K.