Specific Gravity of Soil Particles:
it is defined as the ratio of their density to that of water. The specific gravity of soil Particles may vary from 2.0 to 3.3, But usually is between 2.65 and 2.75. The usual soil weight (voidness) is between 2600 and 2700 kg/cu.m.
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Types of
soil
|
Specific
gravity
|
|
Sand
|
2.65-2.67
|
|
Silt sand
|
2.67-2.70
|
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Inorganic clay
|
2.70-2.80
|
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Soils with mica or iron
|
2.75-3.00
|
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Organic Soils
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Variable but may be under 2.0
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