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9 Οκτ 2015 · Soil pollution is defined as changes to the physical, chemical, and biological properties of soil caused by human activity that degrade soil quality. Natural causes of soil pollution include landslides and hurricanes, while man-made causes include urbanization, industrial and agricultural wastes, mining, domestic wastes, and radioactive wastes.
22 Νοε 2016 · The document provides information about stress distribution in soil due to self-weight and surface loads. It discusses Boussinesq's formula for calculating vertical stress in soil due to a concentrated surface load.
30 Νοε 2020 · Soil quality and soil health are closely related terms referring to a soil's ability to function properly. Assessing soil quality involves measuring indicators related to physical, chemical, and biological properties. Commonly used indicators include soil organic matter, nutrient levels, pH, infiltration rate, aggregate stability, and microbial ...
25 Φεβ 2013 · A generalized approach for first-order estimations of the effective yield stress (ωy' = preconsolidation stress) in a variety of soil types is developed for the cone penetration test (CPT).
5 Απρ 2013 · The effective preconsolidation stress (Pc' = σ vmax ' = σp'), or yield stress (σy'), is defined as the point which separates elastic from plastic behavior. For coarser soils, including silts and sands that are difficult to both sample and test in this manner, in-situ tests may be valuable.
1 Ιαν 2019 · This paper presents an experimental study of the yield stress of a colluvium from Rio de Janeiro, through its determination in a modified set-up of the slump test and in a rotational parallel...
The yield surface is especially useful when evaluation of deformation is required. For limiting equilibrium analysis, the Mohr-Coulomb criterion is still the most conve-nient failure criterion. 2.2 Effective Stress Versus Total Stress Analysis.
