Geotechnical laboratory testing in Bendigo addresses the complex residual soils and weathered siltstone/sandstone profiles typical of the Victorian goldfields region, where reactive clays and variable fill demand precise characterisation. Our NATA-accredited facility runs index and performance tests aligned with AS 1289 methods, starting with routine soil classification (USCS/AASHTO) to define particle-size distribution and plasticity, and extending to Atterberg limits for shrink-swell potential assessment critical to local foundation design on Ordovician-derived colluvium.
Residential subdivisions on sloping sites, commercial earthworks, and infrastructure upgrades across Greater Bendigo routinely require consolidation and shear-strength data to satisfy AS 2870 and local council permit conditions. We support these projects with oedometer consolidation for settlement prediction and triaxial test programs to determine effective stress parameters in saturated subgrades. Selecting the right test suite early reduces geotechnical risk in a landscape shaped by historic mining disturbance and seasonal moisture cycles.
Full determination per AS 1289.3.1.1 and 3.2.1. Includes liquid limit by Casagrande cup, plastic limit by thread rolling, and calculated plasticity index. Suitable for all fine-grained soils in Bendigo.
Measures the shrinkage of a soil bar when dried from its liquid limit condition. Essential for predicting ground movement in reactive clays common in the region.
Atterberg results plus full USCS classification (including grain size distribution and organic content). Delivers a complete soil identity for foundation design.
If initial results show borderline plasticity or field conditions change, we re-run Atterberg limits on fresh samples to confirm consistency before final design decisions.
AS 1289.3.1.1 – Determination of liquid limit (Casagrande method), AS 1289.3.2.1 – Determination of plastic limit, AS 1289.3.1.1 – Standard test methods for liquid limit, plastic limit, and plasticity index of soils
The typical range for a standard Atterberg limits test (LL, PL, PI) is AU$80 – AU$180 per sample. This can vary depending on the number of samples, required turnaround time, and whether additional classification tests are bundled.
Bendigo's soils range from low-plasticity sands near the hills to highly expansive clays in the floodplain. Atterberg limits are the only way to quantify plasticity and predict shrink-swell behaviour. Without this test, foundation design for reactive soils is guesswork.
Yes. The plasticity index directly influences subgrade stiffness and susceptibility to moisture changes. In road design, Atterberg results help select stabilisation additives (lime, cement) and are often combined with CBR testing to set design subgrade values.