Effects of Relative Density and Grading on the Particle Breakage and Fractal Dimension of Granular Materials

Particle breakage was reported to have great influence on the mechanical property of granular materials. However, limited studies were conducted quantify detailed effects relative density and initial grading particle behaviour materials under different confining pressures. In this study, a series monotonic drained triaxial tests performed isotropically consolidated with four gradings densities. It is observed that increases as pressure or increases, whereas it decreases increasing coefficient uniformity. Due breakage, curves after can be simulated by power-law function fractal dimension. As dimension approaches limit materials, i.e., 2.6. A unique normalized relation between extent considering index found.