Unsaturated Triaxial Testing (Double Wall Cell) System
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The VJ Tech Double Wall Cell System allows the inner and outer cell pressures to be kept at the same value by the Cell Pressure Controller thus eliminating the volume change due to cell expansion. The Pore Water Pressure controller provides an accurate measurement of water entering or leaving the sample whilst the Automatic Volume Change device (which is connected to the inner cell pressure line) provides the total volume changes of the specimen.
The new Double Wall Cell design separates the acrylic Inner Cell (glass on request) completely from the acrylic Outer Cell and there is an air bleed screw on both cells for efficient de-airing. It has 6 valves for air/water flow (inner cell pressure, outer cell pressure, 2 base water pressure & 2 top cap water/air pressure) and is capable of withstanding confining pressures up to 2000 kPa. It is designed with specially coated material to minimise corrosion and is suitable for Load Frames with a 158 mm diameter platen.
The double wall cell can be fitted with interchangeable Base Pedestals and Top Caps to accomodate sample sizes from 38 mm up to 100 mm diameter. The Base Pedestals come fitted with an HAED (1, 3, 5, 10 or 15 Bar).
The Cell base has 7 exit ports, allowing On-Sample Transducers Bender Elements or a Mid-Pore Pressure Transducer to be fitted, & data logging captured by the additional Input sockets on the TriSCAN Pro Advanced and the Pro Dual APC.
The Double Wall Cell can be used for CU, CD & UU Triaxial Tests with a change of Base Pedstal and removal of the Inner Cell if required.
Unsaturated Triaxial Testing (Double Wall Cell) System Available Configuration Possibilities:
Note: This table summarises ALL available options - obviously some combinations are incompatible. The User can select the most suitable configuration for the testing requirements and contact VJ Tech for additional advice on the optimum System setup.
|TriSCAN Pro Load Frame Capacity
|50 or 100 kN (11240 or 22480 psi)
|Double Wall Triaxial Cell Size
|100 mm (4 inch)
||38, 50, 70, or u to 101 mm (1.5, 2, 2.75 or 4 inch)
||2, 3, 5, 10 or 20 kN (450, 675, 1124, 2248 or 4496 lbf)
|Water Distribution Panel
||4-way, 6-way or 8-way
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