product number: BS-3049
product name: Portable Shear Box Assembly
producer: ELE
specification: ASTM D5731
producing area: UK
The technique enables the engineer to select specimens of rock from exposed faces or bore holes, observe orientation of fault lines, then set and test the fault in the shear box.
The apparatus consists of a diagonally split box assembly.The upper half incorporates a vertical ram for compressive loading, and the lower half, two horizontal rams for reversible shearing action.The force applied by the horizontal ram is aligned with the centre of the box and the discontinuity in the specimen. Pressure is applied to the rams by means of hand-operated hydraulic pumps and load is indicated on two Bourdon tube gauges. An adjustable low friction pressure maintainer incorporated into the loading system allows a constant load to be maintained during the test.The pressure maintainer is supplied with a foot pump.
Specification
Maximum sample size
Irregular 125 x 115 mm face area
Cores 101 mm diameter
Load application Hydraulic via two single speed hand
pump/reservoir assemblies
Load gauge Two x 150 mm dia dual-marked
scale 50 kN x 1 kN and
11 000 lbf x 200 lbf
Horizontal Dial gauge 25 mm travel x 0.01 mm
displacement
Weight 45.5 kg
