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05 Shear (15 articles)
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S074N LABORATORY VANE APPARATUS Matest Laboratory Vane apparatus represents a valid alternative to the most common standard triaxial equipment whenever a rapid estimation of the undrained shear strength of a soil specimen is required. Based on the original design by the UK Transport Research Laboratory, this apparatus is hand-operated thus allowing the application of stress to the soil sample as a function of the specific calibration spring and vane used (see accessories). Choice of the spring and vane to be used is made according to the specific soil strength which is expected to result from the test, however, larger vanes are demonstrated to be suitable when soils having low-strength values are considered. The working principle of the apparatus is governed by the rotation of the vane into the soil sample, while the calibrated spring provides the measurement of the applied torque. In addition, two different graduated scales are present on the instrument; one for the applied torque (inner scale) and another for the vane rotation (outer scale). As a matter of fact, the applied load can be obtained in two ways. The first one is based on the use of the relevant calibration charts which directly correlate the angular deflection values with the torque values. The second one can be used when the spring calibration constant (i.e. the slope of the curve on the chart) is multiplied by the angular deflection which is read directly on the dedicated graduated scale. Finally, at the end of the test, the Undrained Shear Strength (cu) is calculated by a formula dividing the applied Torque (T) by a constant (K) which directly depends on the dimensions and shape of the chosen vane. This way, a reliable result is obtained in a very quick and economical way if compared to the huge investment of space and time which are involved in common triaxial testing procedures. The vane apparatus is supplied complete with four calibrated springs and a vane Ø 18.7 x 12.7 mm. Dimensions: 200x250x600 mm Weight: 7.5 kg approx. S074N
S074N
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S057 S057 Field vane tester Used to determine the shear strength of undrained (CU) cohesive soft soils, to firm non-fissured soils on site. The instrument consists of a T-handle cylindrical body where a torsional spring is housed, and three interchangeable vanes of different sizes, used depending to the expected strength of the soil to be tested. The vane is inserted into the soil for 60 mm approx., and the max. torque value is measured on a collar attached to the shaft. Measuring range: 0 - 200 kPa The unit, all stainless steel made, is supplied complete with three vanes dimensions (height x dia.) 16x32, 20x40, 25, 4x50.8 mm, extension rod 500 mm long, tools, carrying case. Dimensions: 500x300x100 mm Weight: 4 kg approx. S057.jpg
S057
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S075 S075 Pocket shear vale 0-1 Kg/cm2 Pocket shear vale 0-1 Kg/cm2 S065
S075
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S076 S076 Pocket shear vale 0-2 Kg/cm2 Pocket shear vale 0-2 Kg/cm2 S076.jpg
S076
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S122-08 S122-08 Hollow punch dia 50mm - shear Hollow punch dia 50mm - shear S122-08.jpg
S122-08
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S122-09 S122-09 Hollow punch dia 60mm - shear Hollow punch dia 60mm - shear S122-09.jpg
S122-09
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S122-10 S122-10 Hollow punch dia 100mm - shear Hollow punch dia 100mm - shear S122-10.jpg
S122-10
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S122-11 S122-11 Hollow punch 60 x 60mm - shear Hollow punch 60 x 60mm - shear S122-11.jpg
S122-11
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S122-12 S122-12 Hollow punch 100 x 100mm - shear Hollow punch 100 x 100mm - shear S122-12.jpg
S122-12
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S123-08 S123-08 Tamper dia 50mm - shear Tamper dia 50mm - shear S123-08.jpg
S123-08
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S123-09 S123-09 Tamper dia 60mm - shear Tamper dia 60mm - shear S123-09.jpg
S123-09
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S123-10 S123-10 Tamper dia 100mm - shear Tamper dia 100mm - shear S123-10.jpg
S123-10
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S123-11 S123-11 Tamper 60 x 60mm - shear Tamper 60 x 60mm - shear S123-11.jpg
S123-11
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S123-12 S123-12 Tamper 100 x 100mm - shear Tamper 100 x 100mm - shear S123-12.jpg
S123-12
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SSW-SHEARM SmartLab for manual shear machines of the Progress series SmartLab for manual shear machines of the Progress series SSW-SHEARM
SSW-SHEARM
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