Decades of experience in the rock testing field mean that FORM+TEST is a sought-after partner for geoscience. Our test solutions can determine typical geomechanical properties like uniaxial compressive strength and elasticity, or can simulate compression and temperature conditions on test specimens.
Servohydraulic systems with high test loads are used in combination with the most exacting measuring technology. The interplay of the individual components plays a crucial role in the reliability of the results. This is a benefit, for example, to energy companies, mine operators and research facilities when they are investigating deposits.
Ø Triaxial Test Systems
· Triaxial Cell TZ 125 S
Application
· Triaxial apparatus for testing rock samples under pressure and temperature conditions from depths up to 5 km
· Adjustment of drilling processes with a fixed adaptable drilling drive
· suitable for the application of drilling, stimulation and pore fluids in rock under pressure
Testing Norm
· free research experiments without reference to standards
Description
· all individual parts are made of high-strength special steel
· Sample can be simultaneously subjected to sheath pressure, pore fluid pressure and drilling fluid pressure of 125 MPa
· Mounting options for optional sensors
· special construction according to specification requirements
· Exchangeable cell lids / cell bottom for other applications
· Holes for electrical feedthroughs of acoustic, optical and thermal sensors
Dimension
· Sheath pressure / pore fluid pressure / drilling fluid pressure: 125 MPa
· Temperature max.: 200°C
· Specimen length: 3000 mm
Drive and control
· Pressure intensifier for generating the pore pressure in the triaxial cell for continuous flow through the sample with controlled fluid pressures
· Temperature control device for controlling the internal cell temperature
· Digital measurement and control electronics system DIGIMAXX® C-30, PROTEUS MT-Software package rock and earth construction with evaluation software
Options and accessories
· horizontal retraction device on the cell lid for easy handling of the sample loading via rods with roller bearings
· Heat
· Measurement technology, i.e. complete sensor technology such as displacement transducers, strain transducers, strain gages etc.
· Fluid/gas supply and discharge
· Ultrasonic testing systems
· permeability testing
· Torque wrench / torque intensifier
· protective sheath
·
· Triaxial Cell TZ 700
For triaxial stress-strain experiments on cylindrical specimens: triaxial multistage tests to examine the post-failure reaction, stabilization or a stepwise increase of the confining pressure is possible. The increase of axial stress is force-displacement controlled or strain-controlled.
For: cylindrical rock and soil cores with a length/diameter-ratio of 2:1
Standard
· DIN 18137-2, Issue:1990-12 Building ground, tests and testing equipment; determing the lateral resistance; triaxial test
· ISRM recommendations
· if required, the national recommendations can be taken into account
Accuracy
· class 1
Design size
· max. confining pressure: 700 bar
Options and Accessories
· specially designed compression test frame for carrying out triaxial strength tests for use with a triaxial cell
· equipment to facilitate transportion into the test area
· separately controllable pump aggregate for the hydraulic supply of the
compression testing machine / pressure transducer
· pressure transducer for producing the pore pressure in the triaxial cell so the specimen is continually subjected to flow-through with controlled fluid pressures
· safety system (confining pressure > pore pressure)
· tension measuring and controlling equipment for determining the longitudinal and lateral deformation on cylinders
· ultrasonic test unit
· tempering equipment to control the temperature inside the cell
· digital measuring and controlling electronic systemDIGIMAXX® C-30,
· PROTEUS-software packet "Rock and Earthworks" with GGU evaluation software
· Triaxial Cell 1000 bar
For triaxial stress-strain experiments on cylindrical specimens: triaxial multistage tests to examine the post-failure reaction, stabilization or a stepwise increase of the confining pressure is possible. The increase of axial stress is force-displacement controlled or strain-controlled.
For: cylindrical rock and soil cores with a length/diameter-ratio of 2:1
Standard
· DIN 18137-2, Issue:1990-12 Building ground, tests and testing equipment; determing the lateral resistance; triaxial test
· ISRM recommendations
· if required, the national recommendations can be taken into account
Accuracy
· class 1
Design size
· max. confining pressure: 1000 bar
Options and Accessories
· specially designed compression test frame for carrying out triaxial strength tests for use with a triaxial cell
· equipment to facilitate transportion into the test area
· separately controllable pump aggregate for the hydraulic supply of the
compression testing machine / pressure transducer
· pressure transducer for producing the pore pressure in the triaxial cell so the specimen is continually subjected to flow-through with controlled fluid pressures
· safety system (confining pressure > pore pressure)
· tension measuring and controlling equipment for determining the longitudinal and lateral deformation on cylinders
· ultrasonic test unit
· tempering equipment to control the temperature inside the cell
· digital measuring and controlling electronic systemDIGIMAXX® C-30,
· PROTEUS-software packet "Rock and Earthworks" with GGU evaluation software
· Triaxial Cell 1500 bar
For triaxial stress-strain experiments on cylindrical specimens: triaxial multistage tests to examine the post-failure reaction, stabilizing or intermittently increasing the surface pressure is possible. The rise in the axial tension takes the path of force or is expansion-controlled.
For: cylindrical rock and soil cores with a length/diameter ratio of 2:1
Standard
· DIN 18137-2, Issue:1990-12 Building ground, tests and testing
equipment; determing the lateral resistance; triaxial test
· ISRM recommendations
· if required, the national recommendations can be taken into account
Accuracy
· Class 1
Size
· max. surface pressure: 1500 bar
· max. temperature inside cell: 200 °C
Options and Accessories
· specially designed compression test frame for carrying out triaxial strength tests in the inset with a triaxial cell
· equipment to facilitate transportion into the testing room
· separately controllable pump aggregate for the hydraulic supply of the
compression testing machine / pressure intensifier
· pressure intensifier for producing the pore pressure in the triaxial cell so the specimen is continually subjected to flow-through with controlled fluid pressures
· safety system (surface pressure > pore pressure)
· tension measuring and controlling equipment for determining the longitudinal and lateral deformation on cylinders
· ultrasonic test unit
· tempering equipment to control the temperature inside the cell
· digital measuring and controlling electronic systemDIGIMAXX® C-21,
· PROTEUS-software packet "Rock and Earthworks" with GGU evaluation software
· Triaxial Testing System TZ 1000
Rehearsals
· cylindrical rock samples in different dimensions
Norms
· DIN
· ASTM
· ISRM
· DGGT
|
|
· Institutes for Geotechnology · tunnelling · Soil and rock mechanics |
|
Sizes |
· Test force optionally between: 1000 ... 3000 kN · Traxial cell optionally between 500 ... 2000 bar |
|
Range of application |
· uniaxial rock testing · Rock mechanical investigations · triaxial stress and deformation experiments |
|
|
· stress-strain behaviour · Determination of rock-mechanical parameters such as uniaxial compressive strength, modulus of elasticity and shear strain factor · triaxial multi-stage experiments for the investigation of post-breakage behaviour |
|
Execution |
· Individual components Test frame and drive station with integrated hydraulics, triaxial cell with pressure intensifier, fast-reacting digital controller and user-friendly test software are removed and connected to each other depending on the configuration. This allows the user a wide range of expansion stages and options. |
|
Options/ Accessories |
· Test frame with adjustable test chamber height · Running-in aids for specimens and fixtures · extra stiff test frame uniaxial / triaxial tests |
Ø
Ø Compression Testing Machine ALPHA 1-2000 S
Compression testing machine for tests on rock samples with triaxial cell.
Specially suitable for large specimen dimensions, as the hydraulically adjustable upper cross head allows a simple adjustment of the test area height.
Compression tests on building materials:
Concrete cubes and cylinders, bodies of masonry, stones and elements made of unreinforced concrete or lightweight concrete, bricks, sand-lime bricks and elements, ceramic clinkers, aerated concrete blocks, hollow blocks.
Ø
Ø Triaxial Testing System TZ 1000
Rehearsals
· cylindrical rock samples in different dimensions
Norms
· DIN
· ASTM
· ISRM
· DGGT
|
|
· Institutes for Geotechnology · tunnelling · Soil and rock mechanics |
|
Sizes |
· Test force optionally between: 1000 ... 3000 kN · Traxial cell optionally between 500 ... 2000 bar |
|
Range of application |
· uniaxial rock testing · Rock mechanical investigations · triaxial stress and deformation experiments |
|
|
· stress-strain behaviour · Determination of rock-mechanical parameters such as uniaxial compressive strength, modulus of elasticity and shear strain factor · triaxial multi-stage experiments for the investigation of post-breakage behaviour |
|
Execution |
· Individual components Test frame and drive station with integrated hydraulics, triaxial cell with pressure intensifier, fast-reacting digital controller and user-friendly test software are removed and connected to each other depending on the configuration. This allows the user a wide range of expansion stages and options. |
|
Options/ Accessories |
· Test frame with adjustable test chamber height · Running-in aids for specimens and fixtures · extra stiff test frame uniaxial / triaxial tests |
Ø
Ø Compression Test Machine, ALPHA 2-3000 "S"
Compression tests on rock specimens for load, displacement or deformation control in the closed loop of the servo-hydraulic on:
· cylindrical rock specimens of granite, basalt etc. In the ratio 2:1 with Ø 25,4 / 50,8 / 76,2 / 101,6 / 127 / 152,4 mm
Accuracy
· according to DIN 18136 Issue 2003-11 building ground – examining
soil specimens – uniaxial compression test
· DIN EN ISO 7500-1, Class 1 including determining the relative width of backlash
Sizes
· test load (pressure) max.: 3 000 Kn
Options and Accessories
· triaxial cell for the triaxial strength test on rock specimens
· connection provided for more test machines
· extra stiff test frame uniaxial/triaxial tests
· additional load cell in the lower measuring range (e.g. 1000 kN)
· 10 volts analog exit, load or displacement
· lateral strain measuring and controlling equipment
· drive station AS with powerful hydraulic aggregate
· specific test machine controller with reducing the measuring distance
by peak value to enable faster recording of the specimen rupturing as well as synchronous measuring of all meter flumes
· „PROTEUS“ test software for test controlling with measurement
logging and data storage
· GGU evaluation software
Ø Compression Testing Machine ALPHA 1-3000 S
Ø Compression Testing Machine ALPHA 1-2000
Application Range
· monoaxial rock testing
· rock mechanical investigations
Size
· test load optionally between 1000 ... 3000 kN
Standards
· DIN
· ASTM
· ISRM
· DGGT
Precision
· according to DIN EN ISO 7500-1, class 0.5 (1)
Samples
· cylindrical rock samples in different dimensions
Test Facilities
- geotechnical Institutes
- tunnel construction
- soil and rock mechanics
Application
- determination of rock-mechanical parameters such as uniaxial compressive strength, tensile strength, modulus of elasticity and lateral extension ratio
- stress deformation behaviour
- determination of the crevice tensile strength
Description
· individual components test frame and drive station with integrated hydraulics, fast-reacting digital controller and user-friendly test software are removed and connected with each other depending on the configuration. This allows the user a wide range of configuration levels and options.
· 4-column load frame with extremely high longitudinal and lateral stiffness to keep material expansion as low as possible during the first specimen fracture
· the machine columns are screwed backlash-free to the machine base and top
· machine base and top made of solid material, all contact surfaces are precisely mechanically processed
· machine columns in chrome-plated design
· servo-hydraulically controlled low-friction test cylinder with force transducer for exact and precise test control and evaluation
· ergonomic test chamber height
· safeguard
Drive & Control
· drive station for automatic force control in a closed servo-hydraulic control loop
· PROTEUS test software for simple test control and evaluation
Options / Accessories
· test frame with adjustable test chamber height
· drive-in aids for specimens and fixtures
· triaxial cell for triaxial strength tests on rock samples
· extra stiff test frame uniaxial / triaxial tests
· longitudinal and lateral strain measurement equipment
· drive station AS with powerful separate hydraulic unit
· analysis software