Exploring the relationship between critical state and particle shape for granular materials

摘要: The relationship between critical state and particle shape corresponds to the most fundamental aspect of mechanics granular materials. This paper presents an investigation into this through macro-scale micro-scale laboratory experiments in conjunction with interpretation analysis framework soil mechanics. Spherical glass beads crushed angular different percentages were mixed a uniform quartz sand (Fujian sand) create sequence mixtures varying shape. On micro-scale, was accurately measured using laser scanning technique, characterized by ratio, sphericity convexity; new index, taken as average three measures referred overall regularity, proposed provide collective characterization macro-scale, both undrained drained triaxial tests carried out evidence that can alter response well states stress space volumetric compression space. Fujian spherical found be markedly more susceptible liquefaction than beads. change susceptibility shown consistent position locus (CSL) space, manifested decrease intercept gradient CSL due presence Quantitative relationships have been established each parameters parameters, thereby providing way construct constitutive models intrinsic properties built in.