Mining Industry Leaders Laboratory Review Comments November 29, 2016

Mining Industry Leaders Laboratory Review Comments:

Following a review of Trilab’s operations and testing capability in November 2016, the following comments were received from Mining Consultant Industry Leaders from around the world and locally:

“Many thanks for allowing us to visit your labs this afternoon. I must say I’m very impressed. Having been used to the national rock testing labs, what I saw today is equal if not better.”

“Thank you again for hosting us yesterday. I think the visit went really well, and the workshop team were extremely impressed with both the laboratory and your depth of knowledge and enthusiasm for geotechnical testing. So I think a big tick for the review.”

“Many thanks for getting these processed so quickly. Reiterating other comments from earlier on. Thank you for spending time with us yesterday, I really enjoyed my time in the lab yesterday and it was a great pleasure seeing some who is so obviously passionate about their work. I have great confidence in all of the test data that we have received from you.”

mining-industry-leaders-laboratory-review-comments

Rock Triaxial Technical Paper October 25, 2016

Press Release: 24 October 2016

Rock Triaxial Technical Paper:

Trilab, as part of its ongoing research and development assistance, has participated in a technical paper written by Julian Venter with the assistance of Colin Purvis. Trilab is also participating in ARCARP Project C25025 “Guidelines for Estimating Rock Mass Strength from Laboratory Properties”.

Synopsis: “A Probabilistic Approach to Estimating the Hoek Brown Intact Rock Parameters for Design”

The current practice in assessing the Hoek Brown intact rock parameters for rock mass failure mechanism stability assessment dictates the use of either single stage not multi stage Hoek Cell rock triaxial testing. Both of these methods require large numbers of data points to account for variability and result in best estimates for the Hoek Brown intact rock parameters based on regression of the data points. This paper presents a method of estimating a complete Hoek Brown intact failure curve based on a single sample with sufficient precision to be used as an estimate of intact rock strength for a single point location as it may not be possible to retrieve enough uniform rock core for multiple single stage tests. There are savings for both the testing as well as the transportation costs with multi stage testing.

The paper has already been presented at:

► August 2016: National University of Singapore, jointly organised by the Geotechnical Society of Singapore (GEOSS) and the Centre for Soft Ground Engineering. Trilab joint venture presentation with Julian Venter was very well received by all attendees. Our companies would like to thank Dr.Chian Siau Chen the Vice President of GEOSS and his society for their assistance. The seminar was attended by 80-100 of Asia’s leading engineering professionals, provided Trilab an opportunity to present the latest in its geotechnical testing capabilities.

► September 2016: Asia Pacific Slope Stability in Mining (APSSIM) Conference was held in Brisbane, Australia, 6-8 September 2016. This inaugural conference provided a special forum for best practice and state-of-the-art targeted in respect to pit slope investigations, design, implementation and performance monitoring.
The testing for the paper was carried out by the latest in rock mechanics testing equipment the GCTS High Pressure Triaxial RTR-2500 system, in Trilab’s Brisbane laboratory.
For further information please visit www.trilab.com.au or contact Colin Purvis, General Manager (col.purvis@trilab.com.au).

hp-triaxial-technical-paper-oct-2016

Trilab Capability Statement August 2016 August 30, 2016

DOC01717 – Trilab Capability Statement August 2016

Capability Expansion – Texas Triaxial June 2016 June 21, 2016

Capability Expansion – Texas Triaxial June 2016 website

Increased Capability to perform Modified Texas Triaxial Tests and additional 300mm Shear Box

Trilab is pleased to announce, as part of the company’s expansion plan, it has obtained accreditation for the Texas Triaxial Test and sourced an additional 300mm Shear Box, with Trilab’s increased capabilities summarised below.

Intensive internal training 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 the additional test, RMS T171 and also for 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:
Modified Texas Triaxial Test for pavement materials.

► This test method describes the procedure to determine the shearing resistance of pavement materials (i.e. subbase and base -37.5mm material). This method is based on the Texas Highway Departments test method.
300mm Square Shear Box.

► An additional shear box than enables a maximum particle size of more than 4 times the maximum particle size allowable in the 100mm square shear box, 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 for granular (coarse grained) materials, such as those used in reinforced soil structures and large intact block samples.

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)

Change in Quarantine Requirements and Charges March 21, 2016

Within the geotechnical industry, quarantine is an issue which many of us have to deal with on a daily basis. This delicate process, of sample management can help sustain the industry and safeguard Australia’s environmental interests.
The Federal Department of Agriculture, Fisheries and Forestry (DAFF), has legislated changes in regulation, procedures and policy surrounding quarantine. With regret, we have to inform you about the rise in additional costs of treating test samples, due to the quarantine process that now has to be implemented on rock and soil samples. Please find the costs below.

  • Rates for sample volumes, regardless of the treatment dose:
  • Up to 0.5m3 is $400.00 + gst.
  • 0.5 m3 up to 1.0 m3 is $700.00 + gst.
  • Over 1.0 m3, the price is $1,120.00 per pallet + gst., to a maximum of 1,200kg. If the one pallet or container exceeds 1,200kg, the samples will be separated into smaller batches.
  • These rates include Trilab’s Quarantine Shipment Fee of $300.00 + gst. per batch/shipment and storage for up to 30 days after testing has been completed and test reports issued.

Thank you for understanding, and together we can keep the industry and Australia safe on all environmental fronts.

Please do not hesitate to contact either laboratory should you have any queries or need assistance regarding the new protocols.

For further information please visit www.trilab.com.au or contact Colin Purvis, General Manager
col.purvis@trilab.com.au
Chris Channon, Brisbane Laboratory Manager chris.channon@trilab.com.au
Gerard Creely, Perth Laboratory Manager
gerard.creely@trilab.com.au
or please find our contact details above.

Quarantine Press Release

Capacity to perform a Torsional Ring Shear and 300mm Shear Box August 26, 2015

Press Release: 11 August 2015

Trilab is pleased to announce the expansion of the Perth laboratories testing capabilities with the acquisition of both a Torsional Ring Shear Test to determine Drained Residual Shear Strength of Cohesive Soils to ASTM D6467 test method. As well, a 300mm Shear Box to perform ASTM D3080 test method. NATA accreditation is held for both test methods.

The company has carried out a proficiency testing program to identify the variations in the test methods as well as the testing techniques, to enable Trilab to meet NATA’s strict accreditation requirements.

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

► The Torsional Ring Shear test, it is suited to the relatively rapid determination of drained residual shear strength. The test results are primarily applicable to assess the shear strength in slopes that contain a pre-existing shear surface, such as old landslides, and sheared bedding planes, joints, or faults as well as tailings and other fine grained materials. The ring shear device keeps the cross-sectional area of the shear surface constant during shear and shears the specimen continuously in one rotational direction for any magnitude of displacement. This allows clay particles to become oriented parallel to the direction of shear and a residual strength condition to develop.

► 300mm Shear Box, this method describes the procedure for the determination of the effective angle of internal friction at constant volume conditions of a disturbed sample. This method is applicable to granular type (coarse grained) materials, such as those used in reinforced soil structures and waste dumps as well as interface testing between soils and geotextiles, concrete and many other surfaces used in construction and can be carried out in both Perth and Brisbane laboratories.

For further information please visit www.trilab.com.au or contact Colin Purvis, General Manager (col.purvis@trilab.com.au), or Gerard Creely, Perth Laboratory Manager (gerard.creely@trilab.com.au)

Capability Expansion – Ring Shear Large Direct Shear for Perth May 201…

Increased Capability to perform High Pressure Rock Triaxial Tests, Intact Rock Direct Shears and 305mm Shear Box June 15, 2015

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)

Capability Expansion -HP Tiaxial Intact Large Direct Shear for BNE June 2015

 

Capability Expansion – Mechanical Sieve Calibration to AS 1152 and ASTM E11 January 27, 2015

Capability Expansion – Sieve Calibration January 2015

Trilab is pleased to announce the expansion of the company’s testing capabilities to include Sieve Calibration testing that is compliant with Australian Standard (AS) 1152 Specification for test sieves Appendix B and D as well as NATA Construction Materials Testing ISO/IEC 17025 Application Document July 2013 and ASTM E11.
The company has installed a state of the art Multi Sensor Measurement System.
A request to expand Trilab’s scope of accreditation with the National Association of Testing Authorities Australia (or NATA) has been approved, to include:
► Sieves with apertures ranging from 16mm down to 30µm and sieve diameters ranging up 300mm.
► Scheduled rates for all diameter sieves is $45.00 + gst, which includes sieve mechanically cleaned, calibration with report and packaging for return transportation.
► If the sieve is found to not meet the required specification there will be no charge for the calibration.
► Trilab can source and supply a replacement sieve at very competitive rates and include the NATA endorsed calibration report.
► Quick turnaround is assured, as a commercial CMT laboratory Trilab is only too aware of the importance of down time without essential equipment especially if you pre-book a specific date. Forget about the time consuming glass bead method and calculations.
► Sieves will need to be sent to 346a Bilsen Road Geebung QLD 4034.
The company’s Calibration testing will be fully supported by experienced technical staff with over 70 year’s experience. Staff levels and experience, coupled with quality systems will result in timely and accurate test results.
The addition of the Sieve Calibration component will complement Trilab’s core strengths of Triaxial, Consolidation, Permeability, Aggregate and Rock testing, enabling the company to supply a more comprehensive range of geomechanical testing and calibration services.
For further information please visit www.trilab.com.au or contact Colin Purvis, General Manager (col.purvis@trilab.com.au).

 

Proficiency/Peer Review of Direct Shear and Index Testing Methods and Procedures October 30, 2014

Proficiency/Peer Review of Direct Shear and Index Testing Methods and Procedures

MEMO
Date: 9 October 2014 Ref: 7505 / 7400 / 576-1
To: Trilab Pty Ltd
Attention: Col Purvis, Chris Channon, Chris Park, James Russell
Copy: Professor Stephen Fityus, The University of Newcastle
From: John Simmons
___________________________________________________________________________
Subject: INTERLAB PROFICIENCY TESTING REPORT: STOCKTON BEACH SAND PARTICLE SIZE DISTRIBUTION, PARTICLE SPECIFIC DENSITY, DRY SHEAR STRENGTH: DIRECT SHEAR APPARATUS

1. Introduction
The University of Newcastle has used locally available, well sorted Stockton Beach Sand as a
reference material for many research projects over a considerable period of time. Ajalloeian et.al
(1996) published a compilation of properties which has formed the basis for later comparison and
calibration tests.
Over the period 2012 to 2014, as part of a research project funded by the Australian Coal
Association Research Program (ACARP), a large direct shear machine (LDSM) was designed,
constructed, and operated for measuring the shear strength of coal mine spoil materials. Stockton
Beach Sand was used for a number of calibration tests, including comparisons of three different
shear box sizes of 300mm x 300mm and 720mm x 720mm (LDSM).
During 2014 some variations in LDSM test results were obtained when a different operator
undertook repeat calibration tests on Stockton Beach Sand. Because the LDSM design for
application of shear deformation differs in some respects from typical direct shear apparatus, it was
decided to seek an independent strength measurement to provide certainty about which of the two
LDSM calibration tests was most accurate.
Trilab Pty Ltd operates a large NATA-accredited testing facility in Brisbane, and was approached to
undertake independent testing of Stockton Beach Sand as an inter-laboratory proficiency testing
exercise. This report summarises the Trilab and University of Newcastle (UN) results for:

  • Particle size distribution (PSD);
  • Particle specific density (Gs);
  • Direct shear tests on sand placed as loosely as possible.

Accreditation to ASTM Test Methods and 20 Years of Testing September 30, 2014

Capability Expansion – ASTM Accreditation September 2014 v1

Press Release: 25 September 2014
Accreditation to ASTM Test Methods and 20 Years of Testing
Trilab is pleased to announce the expansion of the company’s testing capabilities to include ASTM Test Methods with NATA accreditation in both Perth and Brisbane laboratories, for the full scope of Trilab’s soil and rock mechanics testing capability.
The company has carried out a proficiency testing program to identify the variations in the test methods as well as the testing techniques, to enable Trilab to meet NATA’s strict accreditation requirements.
The scope of the company’s accreditation with the National Association of Testing Authorities Australia (or NATA) has been expanded to include:

► Rock Mechanics Tests including UCS and with Young’s Modulus & Poissons Ratio, Hoek Triaxials, Direct Shear, Point Load, Cerchar Abrasivity, Ultra Sonics P & S Wave, Slake Durability.
► Soil Mechanics Tests including Collapse Potential, Triaxials, Direct Shears, Consolidation, Permeability i.e. Constant Head and Falling Head, Classification i.e. Atterberg Limits, Grading/Hydrometer, CBR, laboratory compaction both standard and modified, Sports Field Natural Playing Surfaces compliance.

As of the 1 August 2014, Trilab (1994 to 2010 Australian Geomechanical Laboratories i.e. AGLabs), has been providing independent soil and rock mechanics testing and calibration services, for 20 years.

Trilab appreciates the support of it’s loyal client base, built up over the 20 years and for their ongoing support. We are not resting on our reputation and will in the coming months release details of a further upcoming expansion of our testing capabilities. Trilab has also become a corporate sponsor of both the Australian Geomechanics Society (AGS) and International Society for Rock Mechanics (ISRM).
Both Trilab Brisbane and Perth laboratories have successfully completed NATA technical audits during July and August.

For further information please visit www.trilab.com.au or contact Colin Purvis, General Manager
(col.purvis@trilab.com.au)

Chris Channon, Brisbane Laboratory Manager (chris.channon@trilab.com.au)

Gerard Creely, Perth Laboratory Manager (gerard.creeley@trilab.com.au)