Direct and Residual Shear Machine

Direct and Residual Shear Machine Description and Specifications for Lab Tenders

Direct/Residual Shear Machine Use: Measurement of direct and residual shear testing of undisturbed and remolded soil samples.

Standard:

 ASTM D-3080; AASHTO T-236.specifications.

Specifications:

·  A solid 32mm base for the Shear Box assembly mounted on a sturdy steel cabinet, with heavy duty casters for easy mobility, compact, self-contained unit

·  Microprocessor controlled drive system.

·  On-board LCD screen display.

·  Rapid approach and return to start datum.

·  Fully variable speed control from 0.00001 mm (0.000001") to 9.99999 mm (0.399999") per minute.

·  Specimens up to 100 mm (4") square using appropriate shear boxes.

·  Control confining pressures      10:1 beam loading device.

·  Load cell with digital readout to shear force

·  Dial indicators to indicate vertical and shear displacement.

·  Displacement Transducers with digital readouts with output to PC,

         15.2mm range with 0.0025mm resolution.

         25.4mm range and 0.0025mm resolution.

·   Stepper motor drive to control the strain rate within 1%,

·  Strain rate from 0.0025-7.62mm/min.

·  Maximum shear displacement of 20.3mm.

·  Vertical load capacity of 640kg and maximum horizontal shear force of 6,672N.

Accessories (same standards as above)

·  63.5mm diameter stainless steel shear ring,

·  Porous stones

·  Drainage plates

·  Loading block

·  Water chamber constructed of Teflon coated anodized aluminium for corrosion resistance.

·  One Consolidation dia gauge 0.01 mm x 25 mm

·  One strain dial gauge 0.01 mm x 25 mm.

·  Soil Sampler for 60 mm x 60 mm specimen and test form pad of 50.

·  Spares:

·   Porous stone for 60 mm x 60 mm size.

·  Vertical Dial Indicator. Metric and English.

·  Horizontal Dial Indicator. Metric and English.

·  Compression Proving Ring. 2 kN (450 lb.).

·  Compression/Tension Proving Ring. 2 kN (450 lb.).

·  Compression Proving Ring. 3 kN (650 lb.).

·  Compression/Tension Proving Ring. 3 kN (650 lb.).

·  Compression Proving Ring. 4.5 kN (1,000 lb.).

·  Compression/Tension Proving Ring. 4.5 kN (1,000 lb.).

·  Weight Set. Set of four 1 kg, five 4 kg and four 16 kg weights.

·  Weight Set. Set of four 1 kg, three 4 kg and one 16 kg weights.

Shear box assembly

Standard:

ASTM D-3080;AASHTO T-236

Specifications:

·  Designed to fit into the carriage of the Direct/Residual Shear Machines.

·  Supplied complete with two porous stones, one retaining stone and a loading pad.

·  All assemblies can be used for quick shear tests or drained/residual shear test applications.

Shear box sizes

                        60 x 60 mm Square Shear Box Assembly.

                     100 x 100 mm Square Shear Box Assembly.

                     2.5" Diameter Shear Box Assembly.

                     2.42" Diameter Shear Box Assembly.

·  60 x 60 mm Square Specimen Cutter.

·  60 x 60 mm Square Specimen Extrusion Tool.

·  100 x 100 mm Square Specimen Cutter.

·  100 x 100 mm Square Specimen Extrusion Tool.

·  2.5" Diameter Specimen Cutter.

·  2.5" Diameter Specimen Extrusion Tool.

Replacement Parts

·  60 x 60 mm Square Porous Stone.

·  100 x 100 mm Square Porous Stone.

·  2.5" Diameter Porous Stone.