Model:TEXAM
Use:The TEXAMe is the new electronic version of the TEXAM pressuremeter in which the pressure and deformation are measured with electrical sensors and read with a tablet-operated readout.
Standard:
The TEXAMe pre-boring pressuremeter is a rugged and reliable instrument that can be used for various ground engineering applications. This pressuremeter distinguishes itself by its ease of use and versatility. Loading is done manually with a screw jack, which allows the user to run tests in either strain or stress controlled steps. The manually-controlled hydraulic loading system ensures a good repeatability of the test, while making unload-reload cycles very easy. The new electronic version of the TEXAMe pressuremeter makes general operation of the equipment even easier and repeatable.
This equipment includes the following parts.
A control unit houses electrical pressure and volume sensors, connectors, a control valve and a manual actuator (screw jack) for pressurizing the water in the cylinder via a piston.
A readout unit consists of the D/P BOX unit operated with an Andoid tablet. This versatile readout is compatible with other pressuremeters manufactured by Roctest. A special application, installed on the tablet, allows configuring the tests and calibrations, to read and plot the test results in real-time, to log the data, and to review test results.
A water-filled probe is fitted with an easy-to-replace single outer sheath. This sheath consists of rubber typically protected with metallic fins.
And finally an easy-to-repair, high-pressure tubing connects the probe to the control unit.
Test Procedure
The probe is placed at the test depth in a pre-drilled borehole obtained by a method adapted to the soil conditions: wet rotary drilling, augering, shelby tube pushing, etc. In granular soils below the water table, the probe can be driven directly within a slotted casing. The test is run either with a constant rate of deformation by using a uniform rate of rotation of the actuator, or with equal increments of pressure as for the Menard pressuremeter test.
Test Results
An in-situ stress-strain curve is obtained by plotting the injected volume against pressure. The main parameters yielded from the test readings are the Pressuremeter Modulus, Creep Pressure, and the Limit Pressure. A tool (TexamCompanion) developed by Roctest can be used for that purpose.
Control unit |
|
Working pressure | 10 000 kPa (1500 psi) |
Dimensions | 40 x 46 x 125 cm (l x w x h) assembled |
Weight | 30 kg / 28 kg (Box / Actuator) |
D/P BOX Readout unit |
|
User Interface | Bluetooth communication with an Android Tablet |
Resolution | 1 kPa and 0.01 cm3 |
Power Supply | 2 x 12 V, 2.3 A, rechargeable batteries |
Dimensions | 25 x 28 x 12 cm (l x w x h) |
Housing | Splashproof, resistant ABS case |
Autonomy | > 8 hours typically |
Power supply interface | Universal AC wall plug with US/Euro adapter + adapter cable for car (lighter) & for external battery |
Note: D/P BOX & Android Tablet sold separately
Probe |
|
Diameter | 74 mm (N Long) / 44 mm (A) |
Length | 72 cm / 84 cm |
Weight | 6.4 kg / 4.5 kg |
Max radial expansion | 35 % |
Please specify:
Tubing length (25, 33 , or 50 m)
Probe diameter
Accessories (metallic sheaths, rings) and optional items
Optional Accessories
A high-precision digital gage kit to be connected on the front panel as a backup reading.
A mechanical volume counter to install on the handle shaft, also for backup reading.
A slotted casing assembly compatible with A-size probe, for use in difficult soils (gravely soils).
Note that the TEXAMe is compatible with the BOREMAC and PENCEL Probes – see sparate brochures for more details.