346A Bilsen Rd, Geebung QLD

Phone +61 7 3265 5656


Introduction of Rock Direct Tensile and Extended Height Consolidation Testing

Trilab is pleased to announce the further expansion of its testing capacity and capability with the acquisition and successful installation of specialised equipment in the company’s NATA accredited Brisbane laboratory that now allows the company to perform:

  • Rock Direct Tensile strength testing of intact rock core specimens with Young’s Modulus, and Poisson’s Ratio, in accordance with ASTM International standards.
  • Extended Height Consolidation testing.

Rock is much weaker in tension than in compression.  In determining the failure condition for a rock structure, many investigators employ tensile strength of the component rock as the failure strength for the structure.  Direct tensile stressing of rock is a common test for determining the tensile strength of rock that may be used in tunnel and underground mine design.

The Extended Height one-dimensional consolidation test presents the time rate of consolidation data from incremented load stages e.g. for tailings assessment.  The apparatus is a modified Oedometer; the modification permits samples of much greater thickness of up to 400mm to be tested.  The equipment can accommodate diameters ranging from 45mm to 75mm as well as insitu samples from vibro-core tube.

Potential New Testing Services

Trilab is currently undertaking feasibility studies in relation to the following specialised soil and rock mechanics tests:

  • Aggregates testing.
  • Contaminated water permeability testing.
  • Universal Cyclic Load Triaxial System (for road pavement testing).
  • Intact Direct Shears (High Pressure) and Reinforced Earth Wall material testing.
  • Uranium and the handling of hazardous materials testing.

Feedback in relation to any of these proposed new testing services would be welcomed and appreciated.

Business As Usual

The company’s Brisbane and Perth laboratories are now structured to deliver almost immediate turnaround on all of its key tests including Triaxial, Direct Shear, Oedometer, UCS and Permeability.