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The time required for saturation of the soil in direct shear tests

The time required for saturation of the soil in direct shear tests

The time required for saturation of the soil in direct shear tests

(OP)
hi,

how much time is needed to ensure that the soil is saturated, at the direct shear test.

RE: The time required for saturation of the soil in direct shear tests

Depends on the type of soil and how saturated it is when you place the sample in the machine.

Mike Lambert

RE: The time required for saturation of the soil in direct shear tests

(OP)
True, but for example, how much time is needed for clay?
Or for fine sand?

RE: The time required for saturation of the soil in direct shear tests

There's no guarantee that you'll ever reach full saturation just by submerging a sample in water.

f-d

¡papá gordo ain’t no madre flaca!

RE: The time required for saturation of the soil in direct shear tests

Fine sands will saturate very quickly, I would guess one hour to be more than sufficient. Clays are more difficult to gage. Very dense over consolidated clays may never reach 100% saturation in the shear box. Monitor the vertical displacement loading/inundating and allow to swell until the specimen has appeared to come to equilibrium.

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