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TEXAMe Pressuremeter

New

EASY TO OPERATE PRESSUREMETER

REAL TIME READING AND PLOTTING OF TEST RESULTS

RUGGED CONSTRUCTION

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.

 

Description

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.

Specifications

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 %

Ordering Info

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.

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