The Rock Mechanics Laboratory

The Rock Mechanics Laboratory Division of PT Geo Labora Indonesia is a professional testing unit specializing in the characterization of the physical and mechanical properties of rock to support exploration activities, geotechnical design, and mining operations. With standardized laboratory facilities and experienced specialists, we provide accurate and accountable technical data in accordance with both national and international standards.

As part of the company’s commitment to quality and mine safety, our rock mechanics laboratory services are capable of delivering essential geomechanical parameters for slope stability analysis, mine opening design, geotechnical modeling, and the evaluation of rock mass behavior under specific loading conditions.

All testing procedures follow national and international standards such as SNI, ISRM, ASTM, and AASHTO, as well as technical guidelines for mining geotechnics. Testing is conducted by competent analysts and technicians under quality control measures to ensure that the results are consistent, precise, and suitable for use in geotechnical design calculations.

The services provided by PT Geo Labora Indonesia include the following:‍

1. Physical Properties Testing‍

• Determination of specific gravity
• Determination of density and porosity
• Determination of rock moisture content‍

2. Mechanical Properties Testing‍

• Uniaxial Compressive Strength (UCS) test
• Brazilian Test (Indirect Tensile Strength)
• Triaxial test (confined/unconfined)
• Point Load Index (PLI) test
• Abrasivity test
• Slake Durability Index test
• Direct shear test
• Hammer test
• Permeability test
• Ultrasonic Pulse Velocity test‍

3. Rock Mass Classification Analysis‍

• Rock Mass Rating (RMR) parameter assessment
• Geological Strength Index (GSI) calculation
• Q-System testing
• Rock Mass Strength (RMS) calculation‍

4. Sample Preparation and Handling‍

• Core retrieval
• Geotechnical core logging
• Cutting, trimming, and preparation of rock cylinder samples in accordance with ISRM standards

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