Sand cone in-place density

We determine the in-place density and water content of compacted soils and granular layers using the sand cone method. Combined with the laboratory Proctor result for the same material, the test gives the degree of compaction that most earthworks and pavement specifications use as their acceptance criterion. As an independent third party, we carry out the measurements on site and report the results impartially.

What we do

  • In-place bulk and dry density of fill, subgrade, subbase and base layers
  • Calibration of the test sand and sand cone apparatus
  • Water content of the excavated material by oven drying to TS EN ISO 17892-1
  • Degree of compaction relative to the maximum dry density from TS EN 13286-2 Proctor tests
  • Typical frequency of about one test per 1000 m² of layer, or as the specification requires
  • Retests after re-compaction of areas that do not meet the requirement

Standards

  • ASTM D1556/D1556M-24
  • TS 13872
  • TS EN ISO 17892-1
  • TS EN 13286-2

Why it matters

Density is the most direct measure of how well a layer has been compacted, and insufficient compaction leads to settlement, loss of bearing capacity and early pavement distress. The sand cone method measures the volume of the test hole with calibrated sand, which makes it applicable to a wide range of soils and granular materials. Because results depend on oven-dried water content, they are typically available within 6 to 48 hours.

What you receive

  • Test report to ASTM D1556/D1556M-24 and TS 13872 for each test point
  • Location, layer and chainage or grid reference for every test
  • Bulk density, water content, dry density and degree of compaction
  • The Proctor reference used (maximum dry density and optimum water content)
  • Photographs of test locations where relevant

Ask us for a quote for sand cone density testing; we attend site on weekdays and weekends to suit your programme.

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