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for the civil engineering industry

Building better technology
for the civil engineering industry

Tel: +44 (0)118 945 3737

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Unsaturated Triaxial Testing (Twin Cell) System


Pro Unsaturated Triaxial Testing (Twin Cell) System

Part Number : VJT9020-P
For prices: call +44 (0)118 945 3737 or Email us
The Twin Cell Unsaturated Triaxial System uses an adapted Bishop & Wesley cell which utilises the ‘Cell within a Cell’ concept in order to eliminate the volume change due to cell expansion. The inner cell is made of glass to negate diffusion and can be removed for underwater sample assembly, facilitating the removal of any air trapped in the inner cell.
Unsaturated soil contains air and water in the soil voids which leads to soil suction, so the test must be capable of providing variable suctions whilst providing accurate measurement of soil volume change. Suction is provided by the Pro Pneumatic APC whilst accurate Volume Change is measured using the Automatic Volume Change Device.
Axial Force is exerted on the sample by a piston fixed to the Base Pedetal, which moves up and down. The piston is driven by pressure from the Single APC Pro and the Dual APC Pro supplies Back and Cell Pressure. Data from the transducers is logged using the spare Analogue sockets on the rear panels of the APCs.
A combination of internal transducers (On-Sample, Mid Pore Pressure or Bender Elements) can be fitted dependent on your requirements

Unsaturated Triaxial Testing (Twin 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.

Bishop & Wesley type Cell Sizes     50 or 100 mm (2 or 4 inch)
Sample Sizes  38, 50, 70, 100 or 101 mm (1.5, 2, 2.75 or 4 inch) (other sizes available on request)
Load Cells 2.5, 5 or 10 kN (562, 1124 or 2248 lbf)
Water Distribution Panel 4-way, 6-way or 8-way 

Product Documentation

Pro Automatic Unsaturated Triaxial Testing datasheet
Download

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Pro Dual Automatic Pressure Controller 3500 kPa (508 psi)
Pro Dual Automatic Pressure Controller 3500 kPa (508 psi)
Pro Single Automatic Pressure Controller (3000 kPa (435 psi))
Pro Single Automatic Pressure Controller (3000 kPa (435 psi))
Pro Pneumatic APC (Single Channel) 1 MPa
Pro Pneumatic APC (Single Channel) 1 MPa
Automatic Volume Change Device with Displacement Transducer
Automatic Volume Change Device with Displacement Transducer
Internal Submersible Load Cells
Internal Submersible Load Cells
25mm LSCT Displacement Transducer
25mm LSCT Displacement Transducer
Pressure Transducer (10 bar)
Pressure Transducer (10 bar)

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