Public test guide

In-situ density testing

Measures the density and moisture of compacted material at its constructed position.

Plain-language explanation

What the test tells you.

The project specification controls the exact method and acceptance requirement.

The field density is measured by the approved method and compared with the relevant laboratory compaction reference.

Specified field-density equipment, location controls, calibration records and the matching laboratory reference result.

Field wet/dry density, moisture and degree of compaction where the required reference is available.

Used to accept or correct earthworks and pavement layers before the next layer is placed.

Typical test sequence

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