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Compressive Strength

Cylinder / Cube compressive strength per ASTM C39 / BS 1881-116

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STEP 1/3
Follow the steps below to complete your test
⚙ Specimen Setup
kN
days
MPa
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Enter Specimen Parameters
Select specimen type, enter maximum load to calculate compressive strength.
📝 Standards
  • ASTM C39: Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
  • BS 1881-116: Testing concrete - Method for determination of compressive strength
  • Load rate: 0.25 ± 0.05 MPa/s for cylinders, 0.3 MPa/s typical for cubes
  • Reporting: strength to nearest 0.1 MPa for individual, 0.5 MPa for average
  • Aspect ratio correction factor applies for height/diameter ≠ 2.0