Sandberg offers independent UKAS accredited stone testing for a comprehensive range of British (BS EN), American (ASTM), documented in-house stone testing procedures and bespoke stone testing methods.
Innovative designs, unusual installations and variable climatic conditions can often necessitate the development of specialised, bespoke stone testing methods. In such cases, Sandberg has the in-house expertise to set up equipment and conditions to meet project-specific stone testing requirements.
Likewise, where issues arise in respect of in-service exposure and performance, Sandberg can offer specialised stone testing investigative techniques to undertake evaluation and assessment.
Stone testing services include:
Petrographic stone tests
- BS EN 12407: Petrographic examination
- BS EN 12326-2: Petrographic examination (slate)
- ASTM C1721 – Petrographic examination
Physical stone tests
- BS EN 13755: Water absorption at atmospheric pressure
- BS EN 1925: Water absorption coefficient by capillarity
- BS EN 772-11: Water absorption coefficient by capillarity
- BS EN 1936:
- Apparent density & open porosity
- Real density & total porosity
- BS EN 772-4:
- Apparent density & open porosity
- Real density & total porosity
- ASTM C97: Water absorption & density
- BR 141: Porosity & saturation coefficient
- In-house method: Microporosity (water)
Mechanical stone tests
- BS EN 1926: Compressive strength
- BS EN 772-1: Compressive strength
- BS EN 12372: Flexural strength under concentrated load (3pt)
- BS EN 13161: Flexural strength under constant moment (4pt)
- ASTM C99: Modulus of rupture (3pt)
- ASTM C170: Compressive strength
- ASTM C880: Flexural strength (4pt)
- ISRM: Uniaxial compressive strength
- ISRM: Point load strength
Durability stone tests
- BS EN 12371:
- Frost resistance – Identification Test
- Technological Test
- BS EN 12370: Salt crystallisation
- BR 141: Salt crystallisation
- BR 141: Acid immersion
- ISRM: Slake durability
- BS EN 14066: Thermal shock resistance
Miscellaneous stone tests
- BS EN 772-16: Dimensions
- BS EN 1341: Dimensions
- BS EN 1342: Dimensions
- BS EN 1343: Dimensions
- BS EN 14231: Slip resistance
- BS EN 14157: Abrasion resistance
- BS EN 14579: Sound speed propagation
- BS EN 14580: Static elastic modulus
- BS EN 14581: Linear thermal expansion coefficient
- BS EN 16140: Sensitivity to changes produced by thermal cycling
- BS EN 16301: Sensitivity to accidental staining
- In-house method: Staining potential
- In-house Method: Microcrack dye testing
Slate Tests
- BS EN 12326-2: Dimensions
- BS EN 12326-2: Water absorption
- BS EN 12326-2: Failure load in bending
- BS EN 12326-2: Freeze-thaw resistance
- BS EN 12326-2: Thermal cycling
- BS EN 12326-2: Sulphur dioxide exposure
Fixing Tests
- BS EN 13664: Breaking load at dowel hole
- BS 8298-3: precast dowels
- BS 8298-4: kerf clip/channel tensile
- BS 8298-4: undercut tensile
- BS 8298-4: undercut shear
- BS 8298-4: undercut combined tensile and shear
- ASTM C1354: Strength of stone anchorages
Compressive strength 
Flexural strength under constant moment (4-point) 
Breaking load at dowel hole 
Flexural strength under concentrated load (3-point) 
Flexural strength under concentrated load (3-point) 
Dimensions 
Thermal / moisture movement 
Petrographic examination
For more information contact our in-house expert:
