The Relationship between the Unconfined Compressive Strength of a Bituminous Mixture and the Viscosity of the Binder : Technical Paper

Abstract

It was the purpose of this study to: 1. Verify a means for expressing the effect of temperature and rate of deformation upon the unconfined compressive strength of a sheet-asphalt mixture, and 2. Determine the relationships existing between viscosity of the binder and unconfined compressive strength of a mixture at various temperatures and rates of shear. The investigation being reported here had an advantage over some of these earlier studies because of the recent introduction of the sliding plate microviscometer. This instrument permits one to obtain viscosity data not only at temperatures existing in the field but also at varying shear rates. The relationship between unconfined compressive strength of the mixture and viscosity of the binder can then be investigated for comparable rates of shear.