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The void ratio ) of a mixture of ... when the water content of the sample ... is the porosity, V V is the volume of void-space (air and water), V S is the volume of ...
Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, crops, or wood. Water content is used in a wide range of scientific and technical areas, and is expressed as a ratio, which can range from 0 (completely dry) to the value of the materials' porosity at saturation.
Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%. Strictly speaking, some tests measure the "accessible void", the total amount of void space accessible from the surface (cf. closed-cell ...
Void ratio, , is the ratio of ... The effects of the water content on the strength of saturated remolded soils can be quantified by the use of the liquidity index, LI:
The coefficient of permeability varies with the void ratio as e/sup>/(1+e). For a given soil, the greater the void ratio, the higher the value of the coefficient of permeability. Here 'e' is the void ratio. Based on other concepts it has been established that the permeability of a soil varies as e 2 or e 3 /(1+e). Whatever may be the exact ...
The unit weight of a soil when void spaces of the soil contain both water and air. = (+) + where γ is the moist unit weight of the material; γ w is the unit weight of water; w is the moisture content of the material; G s is the specific gravity of the solid; e is the void ratio; Dry unit weight
The global proportionality constant for the flow of water through a porous medium is called the hydraulic conductivity (K, unit: m/s). Permeability, or intrinsic permeability, ( k , unit: m 2 ) is a part of this, and is a specific property characteristic of the solid skeleton and the microstructure of the porous medium itself, independently of ...
The soil is fully saturated (zero air voids due to water content being so high). The solid particles are incompressible. Compression and flow are one-dimensional (vertical axis being the one of interest). Strains in the soil are relatively small. Darcy's Law is valid for all hydraulic gradients.