Water Content in Soil

Water or moisture content in soil

Water or moisture content in soil can be expressed as

w = 100 Mw/Ms                     (1)

where 

w = moisture content (%)

Mw = mass of water in soil (kg, lb)

Ms = dry mass of soil (kg, lb)

Water content can be tested according ASTM D 2216-92 by determining the mass of the wet soil specimen and then drying the soil in an oven 12 - 16 hours at a temperature of 110oC. Values can vary from essentially 0% (near surface rubble, gravel or clean sand) up to 1200% (organic soil like fibrous peat).

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