Adelaide's subsurface is a patchwork of Quaternary alluvium, Hindmarsh Clay, and weathered meta-sediments of the Adelaide Superbasin. Getting compaction right here is not a formality. The sand cone test gives us a direct, physical verification of in-place density. We run it on road subgrades in the northern suburbs, on structural fill in Tonsley, and on trench backfill through the clay belts. The method works regardless of aggregate size. In-situ permeability matters when backfill doubles as a drainage layer, and proctor tests define the reference density we measure against. Our team brings the calibrated equipment to your site and delivers results the same day.
A density reading without a valid reference proctor is just a number. We tie every sand cone result to its specific compaction curve.
