Fresh Concrete Testing

The suitability of a concrete for any task is initially assessed whilst that concrete is still in its freshly mixed state before setting occurs:

  • Is it workable?
  • Will it pump?
  • Does it hold together or segregate?
  • Is it air-entrained?
  • Will it bleed?

Well-established tests are used to categorise fresh concrete properties.

Workability/Consistency

  • Slump test: the most widely used test for assessing the workability of concrete of normal consistency (slump 10mm to 200mm).
  • Flow table test: for concretes that are more free-flowing (slump 180mm+).
  • Vebe test: for concretes that are not workable in the normal sense, the test uses integral vibration.

Control and measurement of air content are easily assessed using a pressure-type air meter.

Fresh density, compactibility and bleeding can all be measured.

From Quality Control and Mix Design assessment to Admixture testing, Sandberg can carry out a comprehensive range of fresh concrete tests.

References: BS EN 12350 series, Testing fresh concrete.
BS EN 480 series, Admixture test methods.
BS 1881 series, Testing concrete.

For more information, contact our in-house expert:
Direct Tel: 020 7565 7098

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