It is a method of the determination of shear strength of kinds of soils. Usually with 3-4 cylindrical specimens, under different ambient pressure (i.e., a small primary stress sigma 3), axial pressure is inflicted respectively. Shear strength parameters are obtained according to Mohr coulomb theory.
It is the Determination of total shear strength parameters and effective shear strength of Fine grained soil and sand soil. according to the different drainage conditions, it can be divided into(UU)(CU or UU,CD)
No Consolidated undrained (UU) test is drainage is not allowed in test in in the process of inflicting surrounding pressure and enhance pressure until the destruction. It is suitable for determination of fine particle soil and sand soil
1. Consolidated undrained (UU) test make sample drainage and consolidation under ambient pressure. under the undrained condition, Increase the axial force until destruction. It is suitable for shear strength of Clay soil and pressure coefficient of sand soil and pore.
2. Consolidated drained triaxial test CD Test make sample drainage and consolidation under ambient pressure. Increase the axial force until destruction under the condition of allowing sample drainage. It is suitable for shear strength of Clay soil
3. A sample multilevel confining pressure and axial pressure to shear, it is suitable for three axis undisturbed soil, disturbed soil and irregular fracture crack soil that can not obtain multiple specimen)
4.Pore water pressure dissipation coefficient, Dissipation percentage and pore pressure coefficient is produced by axial compressive force under the condition of ambient pressure and K0.( Saturation Undisturbed clay soil is greater than the 85%, moisture content is greater than The optimum moisture content of the compaction clay soil).
specification:
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Parameters
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Details
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voltage
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220V±10V 50Hz
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power
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0.75kW
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The axial maximum load
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10kN,20kN,30kN,60kN,100kN Dynamometer Optional, Also can choose force sensor digital display
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Axial deformation
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0-10mm±0.01mm dialgage Also can choose displacement sensor liquid crystal display, Or choose mechanical and electrical communication dial indicator
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Strain rate
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0.0024~4.5mm/min continuously viable ,Any adjustments, LCD
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Ambient pressure
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0-2MPa±0.1kPa (LCD) NC
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Back pressure and pore pressure
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0-2MPa±0.1kPa (LCD) NC Volume change tube 0 ~ 50ml, precision 0.1ml
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Lift
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0-90mm
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Sample (confining pressure cylinder)
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¢63 ¢39 ¢100
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Host, measurement and control system, pressure regulating system, body tube, pressure chamber, constant pressure gauges, pressure regulating valve
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Service:
1. Warranty 1 year of replacement and return.
2, Providing factory visit and study, technical training
3, 24-hour technical support by e-mail or phone
4, Providing laboratory construction program design guidelines
5, Providing product design and OEM service
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