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Increased Capability to perform High Pressure Rock Triaxial Tests, Intact Rock Direct Shears and 305mm Shear Box

Press Release: 11 June 2015

Increased Capability to perform High Pressure Rock Triaxial Tests, Intact Rock Direct Shears and 305mm Shear Box

Trilab is pleased to announce, as part of the company’s expansion plans, it has sourced the latest in rock mechanics testing equipment, the GCTS High Pressure Triaxial RTR-2500 system, with Trilab’s increased capabilities summarised below.

Intensive external training provided by international experts as well as a proficiency testing program in the required test methods and techniques, enables Trilab (Accredited Laboratory No. 9926) to meet NATA’s strict accreditation requirements and ensure our clients of the highest quality test results. NATA accreditation is held for all of the additional tests, which include ASTM D 7012 and TMR Q181C test method.

The scope of the company’s Brisbane capability and accreditation with the National Association of Testing Authorities Australia (or NATA) has been expanded to include:

  • The new Rock High Pressure Triaxial System has a capacity of 2,500kN with a maximum 140MPa confining pressure. It also has the rare capability of being able to apply a maximum 140MPa of back pressure and as well has full axial and diametral strain measurement capabilities within the triaxial cell.
  •  The Triaxial frame is a special high stiffness 10,000kN per mm unit (57 million lbs/inch), thus allowing for post peak analysis. The 2,500kN capacity frame comes with digital hydraulic control allowing stress rate and axial or diametral strain rate control.
  •  Performance of sonic velocity measurements and dynamic elastic constants under differing axial and confining pressures. The system includes two pressure intensifiers for the performance of advanced triaxial tests including: Post Peak Failure Behaviour: Hydraulic Fracturing: Stress/Strain Path (including Ko): High Pressure Rock Permeability.
  • Rock Direct Shears, both intact and joints with full servo control of normal and shearing stresses. Testing can be carried out using constant normal stress or constant normal stiffness. Cores and joints can be cast at any angle to the core axis to shear through bedding planes. The rock shear is a high stiffness system with a capacity of 50kN Normal force and 100kN Shear force.
  •  A 200mm deep, 305mm square Shear Box, which enables up to 30mm particle size material to be tested, a significant increase in the current size available, with full servo control, allowing for the determination of the effective angle of internal friction at constant volume conditions of a disturbed sample. This method is suitable mainly for granular (coarse grained) materials, such as those used in reinforced soil structures. The soil shear is a high stiffness system with a capacity of 100kN Normal force and 100kN Shear force.

For further information please visit www.trilab.com.au or contact Colin Purvis, General Manager (col.purvis@trilab.com.au), or
Chris Channon, Brisbane Laboratory Manager (chris.channon@trilab.com.au)

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