Rock Uniaxial (Unconfined Compression) Testing System
This uniaxial rock testing system is designed and manufactured to perform tests according to ASTM standards and suggested ISRM methods. The system includes a hydraulic loading frame with power pack and applies increasing load at a constant rate of stress to test various materials from soft rock (e.g. sandstone) to high-strength brittle rock or building materials.
The compressive strength is probably the most widely used and quoted rock-engineering parameter. Under uniaxial load conditions the maximum stress that the rock sample can sustain is referred to as uniaxial compressive strength.
The most useful description of the mechanical behaviour of intact rock is the complete stress–strain curve of the compressive strength test. This curve can be used to determine mechanical parameters as well as uniaxial compression strength, Young modulus, Poisson’s ratio and post failure behaviour. This modular system can be configured with different load ranges, load frames and test jigs for different specimen diameters.
- Features
- Specifications
- Software
- Standards
- Applications
- High stiffness 4 column construction design
- Wall type construction available for higher stiffness
- Different frame sizes and load ranges from 500 to 5,000 kN
- Cyclic loading on request
- Hydraulic or servo-hydraulic load frame with different frame sizes (testing area)
- Optional environmental temperature chamber for conducting uniaxial tests under temperature controlled conditions
- Dynamic high speed closed-looped control of load, displacement, position and volume or flow
- Flexible general controlling software for nearly unlimited test procedures of all uniaxial, triaxial and polyaxial test applications with pore-pressure and permeability
- Different test packages:
- Uniaxial compression test package
- Direct tension test package
- Indirect tensile package (Brazilian test)
- Fracture toughness testing package
- Point load testing package
- Upgrade possibility to triaxial test system
- Hydraulic power packs with high quality noise protection, emergency functions for static or cyclic test procedures
- Digital setting of PID parameters to test parameter optimisation and tuning
|
Type of load frame |
Hydraulic / servo-hydraulic |
|
Compression load |
Up to 5,000 kN |
|
Tension load capacity |
Up to 1,500 kN |
|
Frame stiffness |
Up to 10,000 kN/mm, 10 x 10^9 N/m |
|
Stroke |
50 mm (optional up to 150 mm) |
|
Hardness |
55 HRC / customised |
|
Sample sizes |
Up to Ø 150 mm |
GEOsys software for user defined free programmable test standard procedures and complex test sequences by structured Windows operations on a graphic user interface. Through a series of menus, this provides quick access to all the controls needed for test set ups and follows standard test sequences. The software is able to create an unlimited number of test stages with interactive and calculated parameters for closed-loop, real-time control. An unlimited number of control and measuring channels can be simultaneously controlled.
- It is also possible to accept different modules for extra tests
- Individually configurable data acquisition (collection rate, parameter setting, recording type e.g. ASCII)
- Interactive alteration of test parameters for all channels or test devices during the test
- Various operator platforms for different users of the system parameter settings, e.g. configuration, PID parameters, transducer configuration, ranges plausibility.
- ASTM D-7012
- JGS 2521-2009
Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures
Method for Unconfined Compression Test on Rocks
- Detailed information will follow soon
Similar Products:
