Fatigue Behaviour of Lightly Stabilised Granular Materials from Flexural and Indirect Diametral Tensile Testing

Abstract

The fatigue characteristic of a lightly stabilized granular material under traffic loading is an important consideration for the design of a pavement containing such material. This paper presents the evaluation of fatigue behavior of lightly stabilised granular materials using flexural and indirect diametral tensile (IDT) testing. The experimental program included cyclic load flexural and IDT testing to determine the fatigue life of a typical granular material stabilized lightly with 1-3% cement-flyash. Fatigue life was estimated using the approach of approximate energy ratio method and empirical relationships were proposed to relate the fatigue life with tensile strain similar to that proposed in the literature. Details of the experimental investigation, the analysis carried out to determine the fatigue life of the lightly stabilized granular material and comparisons of fatigue characteristics determined from two test methods are discussed in the paper. ASCE.