The determination of shear strength of saturated cohesive soils is mostly dependent on the care and skill with which the operator conducts his work. These soil types are susceptible to sampling disturbances when the sampling tubes are pushed into them. Laboratory shear tests for such soils under-estimate their strength as it is not possible to obtain the sample in an undisturbed state even with maximum precaution in sampling and testing. The Field Vane Shear test involves pushing a four blade vane in the soil and rotating it till a cylindrical surface in the soil fails by shear. The torque required to cause this failure is measured and this torque is converted to unit shearing resistance of this cylindrical surface. In addition to the Laboratory Vane Shear Apparatus, two field models are also available.
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FIELD VANE SHEAR TEST
Description and About
The determination of shear strength of saturated cohesive soils is mostly dependent on the care and skill with which the operator conducts his work. These soil types are susceptible to sampling disturbances when the sampling tubes are pushed into them. Laboratory shear tests for such soils under-estimate their strength as it is not possible to obtain the sample in an undisturbed state even with maximum precaution in sampling and testing. The Field Vane Shear test involves pushing a four blade vane in the soil and rotating it till a cylindrical surface in the soil fails by shear. The torque required to cause this failure is measured and this torque is converted to unit shearing resistance of this cylindrical surface. In addition to the Laboratory Vane Shear Apparatus, two field models are also available.
Description
About
Description
The determination of shear strength of saturated cohesive soils is mostly dependent on the care and skill with which the operator conducts his work. These soil types are susceptible to sampling disturbances when the sampling tubes are pushed into them. Laboratory shear tests for such soils under-estimate their strength as it is not possible to obtain the sample in an undisturbed state even with maximum precaution in sampling and testing. The Field Vane Shear test involves pushing a four blade vane in the soil and rotating it till a cylindrical surface in the soil fails by shear. The torque required to cause this failure is measured and this torque is converted to unit shearing resistance of this cylindrical surface. In addition to the Laboratory Vane Shear Apparatus, two field models are also available.
About
The determination of shear strength of saturated cohesive soils is mostly dependent on the care and skill with which the operator conducts his work. These soil types are susceptible to sampling disturbances when the sampling tubes are pushed into them. Laboratory shear tests for such soils under-estimate their strength as it is not possible to obtain the sample in an undisturbed state even with maximum precaution in sampling and testing. The Field Vane Shear test involves pushing a four blade vane in the soil and rotating it till a cylindrical surface in the soil fails by shear. The torque required to cause this failure is measured and this torque is converted to unit shearing resistance of this cylindrical surface. In addition to the Laboratory Vane Shear Apparatus, two field models are also available.
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