Viscous behaviour of asphaltic mixtures: Simplified fatigue test method

Abstract

A continuously increasing demand on roads and the need to reduce the construction costs has led to the industry requiring simplified test methods which measure the mechanical properties of bituminous materials. The method traditionally used in the industry is based on Marshal mix design, which basically determines the stability and flow test values and do not measure any fundamental property of the mix thereby pavement performance. In contrast, there are a

number of key properties that can be measured to determine the mechanical properties of a bituminous mix, which are vitally important in determination of long-term performance of the mixtures. This paper describes a method, the AKAL test method, which simplifies the ITFT test and measures viscous behaviour to predict the development of permanent strain

accumulation, therefore, fatigue- life and long- term performance of asphalt mixtures.