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  2. Void ratio - Wikipedia

    en.wikipedia.org/wiki/Void_ratio

    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 ...

  3. Porosity - Wikipedia

    en.wikipedia.org/wiki/Porosity

    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 ...

  4. Water content - Wikipedia

    en.wikipedia.org/wiki/Water_content

    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.

  5. Permeability of soils - Wikipedia

    en.wikipedia.org/wiki/Permeability_of_soils

    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 ...

  6. Aquifer properties - Wikipedia

    en.wikipedia.org/wiki/Aquifer_properties

    where is void ratio, is porosity, V V is the volume of void-space (air and water), V S is the volume of solids, and V T is the total or bulk volume of medium. [1] The significance of the porosity is that it gives the idea of water storage capacity of the aquifer. Qualitatively, porosity less than 5% is considered to be small, between 5 and 20% ...

  7. Specific weight - Wikipedia

    en.wikipedia.org/wiki/Specific_weight

    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

  8. Soil mechanics - Wikipedia

    en.wikipedia.org/wiki/Soil_mechanics

    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:

  9. Void (composites) - Wikipedia

    en.wikipedia.org/wiki/Void_(composites)

    Void content in composites is represented as a ratio, also called void ratio, where the volume of voids, solid material, and bulk volume are taken into account.Void ratio can be calculated by the formula below where e is the void ratio of the composite, V v is the volume of the voids, and V t is the volume of the bulk material.