Abstract

Particle morphology and the micromechanics of sands influence mechanical response and properties such as stiffness, critical state parameters, and packing density. Although triaxial testing is the conventional method to determine critical state parameters, it is costly and time-consuming. This paper evaluates sand particle shape descriptors using a semi-automated image processing tool and compares predictions of critical state parameters against laboratory results. Findings demonstrate a strong correlation between morphology and critical state parameters, underscoring the potential of image-based methods as accessible alternatives for geotechnical characterization