Sandberg offers UKAS accredited stone testing for a comprehensive range of British (BS EN), American (ASTM) and documented in-house stone testing methods.
Stone testing accreditation is held for an extensive range of stone testing methods and procedures which cover the following physical and mechanical parameters.
- Petrographic description
- Petrographic examination
- Density (apparent and real)
- Porosity (open and total)
- Water absorption at atmospheric pressure
- Water absorption coefficient by capillarity
- Saturation coefficient
- Compressive strength
- Modulus of rupture (3-point)
- Flexural strength (4-point)
- Frost resistance
- Salt crystallisation
- Thermal shock resistance
- Acid immersion
- Sensitivity to changes in appearance produced by thermal cycling
- Sound speed propagation
- Static elastic modulus
- Linear thermal expansion coefficient
- Abrasion resistance (wide wheel)
- Abrasion resistance (lapping plate)
- Slip resistance (pendulum)
- Breaking load at dowel hole
- Strength of stone anchorages
- Microcrack dye testing
Slate
- Petrographic examination
- Dimensions
- Water absorption
- Bending strength
- Wetting & drying
- Acid immersion
- Thermal cycling
- Freeze/thaw resistance
- Sulfur dioxide exposure
The selection of material for stone testing is critical as it must be representative of the material to be produced and supplied. Sandberg can offer independent expert advice and sampling services by qualified geologists/stone consultants for stone testing to ensure that representative and traceable samples are obtained.
On completion of stone testing, Sandberg is able to provide an independent expert opinion on the results.
For more information contact our in-house expert:
