On the analysis of uniaxial cyclic strain sweep test results to bituminous binders: stiffness-phase angle curve

This paper discusses the analysis of uniaxial tension–compression cyclic strain sweep test results for characterisation bituminous materials. The one bitumen and two mastics, at different oxidative ageing levels, three temperatures are used in study. damage mechanisms leading to failure were shown vary with temperature, transition from slow fast accumulation could be clearly seen evolution plots mechanical variables loading cycles. It was that plot Black diagram provides an excellent viewpoint non-damage related affecting material’s response increasing amplitude. Before significant has accumulated specimen, stiffness modulus-phase angle curve, temperatures, follows very closely linear viscoelastic curve undamaged material, heating identified as most important reversible mechanism. thixotropic effect observed mastics. shape during progression level deformation around crack zone. slope found provide a consistent indicator resistance cumulative loading, it is sensitive state unique relationship between this factor number cycles all materials conditions.