Large-Scale Triaxial Testing and Numerical Modeling of Rounded and Angular Rockfill Materials

This paper studies the behavior of a number of blasting (angular) and alluvium (rounded) modeled rock ll materials by conducting large-scale triaxial testing, as well as numerical modeling. The numerical modeling is based on an elasto-plastic theory and enables one to predict the stress-strainvolumetric behavior of materials during shearing. The material parameters were determined from the experimental and numerical modeling. Variations of the material parameters, with respect to the con ning pressure, Los Angeles abrasion, Point Load index, and particle breakage were investigated. Also, for design applications, curves fitted to the data are presented.