Sampling Tubes For Testing Lab Description and Specifications for Lab Tenders
Sampling Tubes.
For collecting undistributed samples of 38 mm dia
for Triaxial Shear strength and Unconfined Compressive strength either
straight from the field or from a sample of larger diameter.
The wall
thickness is maintained approximately 1.6 mm with an area ratio
approximately 17 per cent. Both relieved and undrelieved sampling tubes
are available. In the relieved type of tube, the internal diameter is
relieved by about 0.5 mm (inside clearance 2%) beyond approx. 19 mm
length from the cutting edge of the tube. This is most suitable for
highly cohesive soils. In the unrelieved type, the internal diameter is
uniform through out. This type is most suitable for soils of low
cohesion. These 38 mm dia tubes are available in different lengths.
Salient Features Unrelieved : (a) 150 mm (b) 200 mm & (c) 225 mm (d) 300 mm long.
Relieved: (a) 150 mm (b) 200 mm (c) 225 mm (d) 300 mm long.
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