Shear Testers
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Shear Testers determine the shear strength of various materials when subjected to opposing loads and it takes direct readings of shear strength to depths up to 3 meters . Three vane sizes allow for the direct determination of undrained shear strength of soft to stiff clays. The peak vane value is determined by a calibrated scale ring built into the head assembly. The cross handle is used both to push the vane to the desired test depth and apply the shearing torque. To correct for the skin friction of the extension rods, a dummy probe replaces the vane and a skin friction test is performed adjacent to the vane test location.
