Sandberg Remains Open During This Challenging Time

Whilst many of our staff are working from home during these unprecedented times, all our activities remain open for business in line with government guidelines.  We have adjusted our operations so that staff remain safe.  Currently, although we are working at a reduced capacity, we are meeting client demands and are welcoming new enquiries.

Stone testing specimens

Sandberg offer independent UKAS accredited stone testing for a comprehensive range of British (BS), European (EN) and 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 have 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 description
  • BS EN 12326-2 - Petrographic examination (slate)
  • BS 5930 -  Petrographic description
  • ISRM - Petrographic description

Physical stone tests

  • BS EN 13755 - Water absorption at atmospheric pressure
  • BS EN 1341 - Water absorption at atmospheric pressure
  • BS EN 1342 - Water absorption at atmospheric pressure
  • BS EN 1343 - 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 - Real density & total porosity
                         - Apparent density & open porosity
  • BS EN 772-4 - Real density & total porosity
                         - Apparent density & open porosity
  • ASTM C97 - Water absorption & density
  • BR 141 - Porosity & saturation coefficient
  • ISRM - Water content, porosity & absorption
  • In-house method - Microporosity (water)

Mechanical stone tests

  • BS EN 1926 - Compressive strength
  • BS EN 772-1 - Compressive strength
  • BS EN 1342 - Compressive strength
  • BS EN 12372 - Flexural strength under concentrated load (3-pt)
  • BS EN 13161 - Flexural strength under constant moment (4-pt) 
  • ASTM C99 - Modulus of rupture (3-pt)
  • ASTM C170 - Compressive strength
  • ASTM C880 - Flexural strength (4-pt)
  • ISRM - Uniaxial compressive strength
  • ISRM - Indirect tensile strength (Brazil test)
  • ISRM - Concentrated point load strength

Durability stone tests

  • BS EN 12371 - Frost resistance
  • In-house method - Frost resistance (BS EN 12371) - large elements
  • DIN 52104 - Frost resistance
  • CWCT - Accelerated aged strength
  • BS EN 12370 - Salt crystallisation
  • BR 141 - Salt crystallisation
  • BR 141 - Acid immersion
  • ISRM - Slake durability
  • BS EN 14066 - Thermal shock resistance
  • In-house method - Fatigue (cyclical)

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 1341 - Slip resistance
  • BS EN 1342 - Slip resistance
  • BS 7976 - Slip resistance
  • BS 7932 - Polished paver value
  • BS EN 1341 - Abrasion resistance
  • BS EN 1342 - Abrasion resistance
  • ASTM C241 - Abrasion resistance
  • BS EN 14579 - Sound speed propagation
  • BS EN 14580 - Static elastic modulus
  • In-house method - Young’s modulus
  • In-house method - Poisson’s ratio
  • BS EN 14581 - Linear thermal expansion coefficient
  • BS 6073 - Moisture expansion
  • BS EN 16140 - Sensitivity to changes produced by thermal cycling
  • In-house method - Staining potential
  • ASTM D2203 - Staining from sealants
  • In-house Method - Crack inspection
  • In-house Method - Dye testing

Slate Tests

  • BS 680 - Water absorption
  • BS 680 - Acid immersion
  • BS 680 - Wetting & drying
  • BS 5642 - Acid immersion
  • BS 5642 - Wetting & drying
  • 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
  • ASTM C120 - Modulus of rupture
  • ASTM C121 - Water absorption
  • ASTM C217 - Weathering resistance

Fixing Tests

  • BS EN 13664 - Breaking load at dowel hole
  • BS 5080 - Pull-out strength
  • In-house method - Undercut anchors
  • In-house method - Kerf supports
  • In-house method - Precast dowels
  • BS 8200 - Soft & hard body impact

David Ellis

For further information contact: David Ellis, Partner
Direct Tel: 020 7565 7065
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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