Particle Shape Effects on Packing Density, Stiffness, and Strength ...
2006年5月1日 · Sphericity, roundness, and smoothness characterize different scales associated with particle shape. New experimental data and results from published studies are gathered into two databases to explore the effects of particle shape on packing density and on the small-to-large strain mechanical properties of sandy soils.
Relative proportions of the different grain sizes have significant influence on the engineering behaviour of a coarse grained soil. Other major factors that influence the geotechnical characteristics of a coarse grained soil are the density of packing of the soil grains and the shape of the soil grains. Grain Size Distribution .
Packing of sands—A review - ScienceDirect
1989年3月1日 · The packing of soils affects their physical properties (i.e. bulk density, porosity, pore size distribution, pore shape and tortuosity and soil strength) and thus determines the retention and flow of water, air and heat, the ease of root growth, the ease with which soils can be cultivated, and the compaction under traffic.
(PDF) Particle Shape Effects on Packing Density, Stiffness, and ...
2006年5月1日 · Sphericity, roundness, and smoothness characterize different scales associated with particle shape. New experimental data and results from published studies are gathered into two databases to...
Evaluation of three packing density models on reference
2023年12月9日 · The three packing density models will now be tested on estimates of packing density or porosity for different materials (angular flint, spheres, crushed grains), on various granular size spans and distribution laws (power-law, truncated power-law, uniform distribution by volume, fractal model) and for various packing processes.
Exploring packing density, critical state, and liquefaction …
2023年4月1日 · In this study, a series of monotonic and cyclic triaxial shearing tests are simulated by DEM to explore the packing density, critical state, and cyclic liquefaction resistance of sand-fines binary mixtures with different initial states (i.e. …
A nonlinear particle packing model for micro-aggregate
2023年5月23日 · The nonlinear packing model for micro-aggregate was constructed to predict the actual packing density of micro-aggregate based on the nonlinear packing model for granular soil. The characteristics, differences and applications of five common calculation models of packing density were discussed.
Soil texture and structure heterogeneity predominantly governs …
2021年7月8日 · We analyzed >400 samples extracted during laboratory and field experiments covering various combinations of texture, bulk density, packing heterogeneity, maize genotype, and soil moisture. We show that soil texture and structure heterogeneity predominantly governs the magnitude of bulk density alteration around roots.
Effects of forest age and stand density on the growth, soil
13 小时之前 · Soil moisture content rises with stand density in younger forests, while soil carbon content increases with age, with surface soil layers exhibiting higher carbon concentrations. The soil carbon ...
Approaches for predicting the soil-water characteristic curves of ...
2024年9月29日 · In this study, two particle packing models, the Kwan model and the modified linear packing density model (MLPDM), were introduced into the van Genuchten (VG) model to predict the SWCC for...