Correlating the Rheological Properties of Binders with the Mechaical Properties of their Surface Dressing Systems

Abstract

This paper presents rheological data in terms of fundamental material properties of three cutback binders, one conventional and two modified with different polymer types. The binders were tested at one frequency over a range of temperatures and conditioning periods. They were then used to produce surface dressing samples which were tested in the Mini Fretting Test under the same conditioning period and temperature conditions as the rheology testing. This test simulates the action of traffic on the dressing. The paper then provides correlations between the fundamental binder properties and the Mini Fretting Test results of the dressings containing the three binders. The correlations highlight the usefulness of the Mini Fretting Test in discriminating between different binder types and in predicting the performance of surface dressings, with particular reference to the early stages when the dressing is most vulnerable.

Keywords:

• Pavement maintenance
• surface dressing
• Binder rheology
• Mechanical Properties