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Rock mechanical testing

As infrastructure projects grow in size, higher utilization of the rock material is required to keep building costs down while maintaining security. Dimensioning models and calculation, which can be used, for example in planning require detailed knowledge of rock mechanics and the properties of different rock materials.

Purpose

In our rock mechanical laboratory there is equipment for rock mechanical testing which in some parts is unique in the country. This gives the opportunity to be able to carry out tests, for example in connection with the construction of infrastructure projects or for purely research purposes.

We can offer different testing methods. In addition to these, it is possible to do special tests as desired, as there is a wide range of mechanical testing equipment and extensive testing expertise in the various laboratories.

Among other things, we have carried out a large assignment for Svensk Kärnbränslehaltning AB (SKB) concerning advanced rock mechanical testing in connection with the design of the work on site investigations for the storage of spent nuclear fuel. Since then, SKB has asked for new knowledge about the mechanical properties of the rock materials. RISE has subsequently developed certain parts of the test methods to obtain new types and improved results.

Method

We carry out many methods based on ASTM and ISRM standards. Upon request, we can incorporate more methods as we have a wide equipment bank. Our equipment is adapted for rock mechanics testing of high quality. We can perform uniaxial compression tests, triaxial compression tests, indirect tensile tests (brazilian tests), direct tensile tests, point load strength, cerchar abrasivity test, density, porosity, water content, normal load and direct shear tests, unaxial and triaxial fracture behavior etc.

We can solve transport between drilling site and RISE laboratory in Borås.

We can also drill cores from stones for testing.

Deliveries

We deliver report, diagram and pictures before and after testing with white background.

More information

Set up of triaxial compression of a rock sample with local and global axial deformation measurement and radial deformation measurement with LVDTs.

Set up of uniaxial compression (UCS) of a rock sample with local axial deformation measurement and radial deformation measurement with LVDTs.

Set up for indirect tensile (Brazilian) test.

Cerchar abrasivity specimen. The sample is scratched with one tip per scratch. The abrasion of the tips is then measured and the hardness of the rock specimen is classified.

Order

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Service

Rock mechanical testing

Instrument

Power / torque sensors

Metrology Area

Force and torque

Standards

  • ASTM D7012-14e1 Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures
  • ASTM D3967-16 Standard Test Method for Splitting Tensile Strength of Intact Rock Core Specimens  
  • ASTM D5731-16 Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications
  • ASTM D2216-19 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
  • ASTM D7625-10 Standard Test Method for Laboratory Determination of Abrasiveness of Rock Using the CERCHAR Method
  • ISRM 1974 Suggested methods for determining shear strength
  • ISRM 1983 Suggested methods for determining the strength of rock materials in triaxial compression
  • ISRM 2013 ISRM Suggested method for determining the abrasivity of rock by the CERCHAR Abrasivity Test
  • Additional methods according to ASTM and ISRM

Price

Price on tender

Delivery time

In the case of normal workload, we can start testing within two weeks of receiving the sample and finish the report within one week after the end of the test.

Supports the UN sustainability goals

9. Industry, innovation and infrastructure
11. Sustainable cities and communities
Lars Jacobsson

Contact person

Lars Jacobsson

Senior forskare

+46 10 516 56 19

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Caroline Hanquist

Contact person

Caroline Hanquist

Ingenjör

+46 10 516 51 82

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