DSA-3 Three-speed Electric Soil Strain Direct Shear Apparatus
Standard: BS 1377, ASTM D3080
Features:
a. Shear apparatus is a kind of strain controlled direct shear apparatus used to test the shearing resistance of soil specimen.
b. It usually adopts four specimens under the different vertical pressure to add shearing force to carry on shear test to obtain the shearing force when the specimen is destroyed.
c. Determine the shearing resistance coefficient, internal frictional angle and cohesion of the soil according to Coulomb's law.
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| Sample area | 30cm² | |||||
| Sample thickness | 2cm | |||||
| Max.vertical loading | 400Kpa | |||||
| Loading grade | 50, 100, 200, 300, 400Kpa | |||||
| Lever ratio | 1:12 | |||||
| Max.horizontal loading | 1.2KN | |||||
| Relative weight of weights | 1.275, 2.55, 5.1, 7.65, 10.2Kpa, hanging pan as per grade 1 | |||||
| Rotation speed of handwheel | 0.1r.p.m., 4r.p.m., 12r.p.m. | |||||
| Axial displacement is 0.2mm as per rotation of the handwheel | ||||||
| Relative shear speed | 0.02mm/min, 0.8mm/min, 2.4mm/min | |||||
| Working voltage | 220V, 50Hz | |||||



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