Laboratory vane shear test

Tuesday, September 27, 2011 13:06
Posted in category Soil Mechanics 2
Views: 1,220 views

Laboratory vane shear test:

This is also a fast way of testing a soil sample, it is used in both the environments i.e. either in laboratory or in field to determine the shear strength of the soft cohesive sensitive clay. Sensitive clays are those clays which when disturbed loses parts of their shear strength.

 In laboratory vane shear test the apparatus used is a cruciform vane structure. A rod is also placed in the structure to produce torque. Now the force is applied to the rod of the vane to produce torque until the failure occurs on the shearing on the circle of diameter d, and height of the cylinder h. now in order to test the soil the blades of the vane are pushed into the soil and rotated with a constant speed of 1 degree per min. with help of the worm gear and a specific wheel arrangement.

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One Response to “Laboratory vane shear test”

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