GeoPAC

Available in 2 models: 5MPa and 10 MPa.
The ingenuity of this system is based, among other things, on the physical separation of the 2 circuits necessary to carry out the pressuremeter tests (gas and water), thus distinguishing itself from all pressuremeter equipment available on the market. Thanks to this technology on the water circuit, the precision achieved on the volume regulation is unequalled.

Implementation

A pressuremeter borehole must be drilled beforehand: undisturbed walls, diameter adapted to that of the probe (63mm or 76mm), surrounding soils as little disturbed as possible.
Once the probe is positioned at the desired level, the operator, via the GeoBOX® , orders the execution of the test. From then on, the test is carried out completely autonomously (variation of pressure levels, management of differential pressure, deflation, etc.) and the operator can supervise the process on his screen as well as the curve and intervene during the test if he wishes.

Applications 

Standard static loading tests of a soil in place by means of a radially expandable cylindrical probe inserted into a borehole
Fully parameterisable cyclic tests
Controlled volume tests
Sinusoidal mode tests

HyperPAC® (High Pressure)

Available in 2 models: 25MPa and 30 MPa.
It allows very high pressure tests to be carried out on very hard rock and soil.
The ingenuity of the system is based on a unique water circuit, mechanically pressurised to carry out pressure tests with impeccable reproducibility. Specific probes have been developed to withstand the very high pressures.

Implementation

A hole must be drilled beforehand by core drilling or roto-percussive methods, with a diameter adapted to that of the single-cell probe (47 or 48 mm).
Once the probe is positioned at the desired level, the operator, via GeoBOX® , orders the execution of the test. From then on, the test is carried out completely autonomously, just like GeoPAC®.

Applications

Standard static loading tests in very hard soils (above 10 MPa) and soft to very hard rocks with a single cell probe
Fully configurable cyclic tests

As with a GeoSPAD2® manual pressuremeter, the tests made with GeoPAC® or HyperPAC® are saved on the GeoBOX® (without time limit) and then transferred by GPRS (option) or USB key and processed on the GeoVISION® software.

GeoPAC® Compact

Following in the footsteps of inventor Louis Ménard, Apageo offers a groundbreaking device: GeoPAC® (Self-Controlled Pressure Meter), controlled by GeoBOX®. GeoPAC®, like its predecessor the Ménard Pressure Meter, enables the performance of standard pressuremeter tests in accordance with standards NF EN ISO 22476-4 and 22476-5. This pressuremeter equipment manages the testing process fully automatically and autonomously, based on the operator’s decision. GeoPAC® simplifies test execution, enhances the reliability of results, and reduces preparation time. GeoPAC® Compact, the latest addition to the range, features a new design with reduced dimensions and weight while maintaining the same performance.

Implementation

The borehole is drilled in such a way that its wall remains virtually intact, its diameter matches that of the probe (63 or 76 mm), and the surrounding soil is disturbed as little as possible. Insert the probe into the borehole, enter the test parameters into GeoBOX®, and start the test. Monitor the test in real time on GeoBOX®.