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Chadwick Geotechnics operates NATA accredited testing laboratories, providing services to the geotechnical and civil engineering sector. Our corporate accreditation with NATA allows us to rapidly establish facilities on remote or significant projects.

We are currently registered as approved suppliers with Department of Transport (VIC) and have previously been accredited for testing with Transport for NSW and The Department of Transport and Main Roads (QLD) in the fields of construction materials testing, general laboratory and field services.

Our Geotechnical Laboratory Testing expertise includes:


California bearing ratio

  • California bearing ratio testing determines the strength of soil in relation to pavement design and construction.

Particle size distribution

  • Particle size distribution testing determines the distribution of soil particles, which is important for geotechnical engineering and soil science.


  • Atterberg limits testing determines the water content at which fine-grained soils transition from a plastic to a liquid state.

Standard compaction

  • Standard compaction testing measures the maximum dry density and optimum moisture content of a soil sample.

Modified compaction

  • Modified compaction testing is used for soils with larger particle sizes and provides a higher level of compaction.

Nuclear density

  • Nuclear density testing determines the density and moisture content of soils, which is important for quality control during construction.


Set-up and maintenance of a quality testing regime to assist the quarry industry

  • Establishes a reliable and effective testing system to ensure high-quality materials for various construction purposes.

Degradation tests

  • Determines the durability of aggregates under various environmental and stress conditions.

Strength/crushing tests

  • Measures the compressive strength and crushing resistance of rock and aggregates to ensure they meet industry standards.

Index tests

  • Evaluates the properties of aggregates, such as particle size, shape, and density, to ensure they meet specified requirements.

Foreign materials

  • Detects and quantifies the presence of contaminants, such as clay, organic matter, and other materials that could affect the quality of aggregates.


  • Evaluates the proportion of flat and elongated particles in aggregates to ensure they meet industry standards.

Unsound stone

  • Determines the soundness of aggregates by identifying the presence of any cracks or weaknesses that could impact their durability and longevity.


Thermal resistivity testing

  • Measuring the rate of heat flow through soil, rock and other materials.

Permeability – falling head, constant head and flexible wall

  • Determining the ability of a material to transmit fluids.

Total and effective stress testing

  • Determining the strength and deformation characteristics of soil under different stress conditions.

Point load index testing

  • Measuring the strength of rock and core samples.

Oedometerconsolidation testing

  • Measuring the rate and magnitude of compression in clay soils.

Shrink swell testing

  • Measuring the volume changes in soil due to moisture content variations.

Book your soil samples in for collection today