Soil and earthworks testing

Laboratory soil testing and earthworks quality checks for construction projects. Tests cover classification, moisture, density, compaction and strength.

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19 tests in this group

  • NatTest LabSoil and earthworks testing

    Atterberg Limits Tests

    Atterberg limits testing assesses the consistency and plasticity of fine-grained soil. Results support soil classification.

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  • NatTest LabSoil and earthworks testing

    Direct Shear Test

    Direct shear testing measures soil resistance along a defined shear plane under an applied normal load. Results support assessment of shear-strength parameters.

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  • NatTest LabSoil and earthworks testing

    Field Density Test (FDT)

    Field density testing measures the density achieved in placed soil or fill. Results can be compared with the specified compaction criteria.

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  • NatTest LabSoil and earthworks testing

    Hydrometer Test

    Hydrometer analysis determines the particle-size distribution of fine soil fractions from their settling behaviour. It complements sieve analysis.

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  • NatTest LabSoil and earthworks testing

    In-Situ California Bearing Ratio (CBR) Test

    In-situ CBR testing measures resistance to penetration in pavement support materials. Results support assessment of subgrade, sub-base and base layers.

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  • NatTest LabSoil and earthworks testing

    Laboratory California Bearing Ratio (CBR) Test

    Laboratory CBR testing measures penetration resistance in prepared soil or pavement-material specimens. Preparation and soaking conditions are specified for the test.

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  • NatTest LabSoil and earthworks testing

    Linear Shrinkage Test

    Linear shrinkage testing measures the reduction in length of a prepared soil sample as it dries. Results support soil classification and shrinkage assessment.

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  • NatTest LabSoil and earthworks testing

    Moisture Content Test

    Moisture content testing measures water content relative to the dry mass of a soil sample. Results support soil classification and compaction assessment.

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  • NatTest LabSoil and earthworks testing

    Particle Density Test

    Particle density testing measures the density of soil solids. Results support calculations of soil volume relationships and related properties.

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  • NatTest LabSoil and earthworks testing

    Particle Size Distribution

    Particle-size analysis determines the distribution of soil sizes. Sieve and hydrometer methods are selected for the sample’s coarse and fine fractions.

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  • NatTest LabSoil and earthworks testing

    Plate Bearing Test

    Plate bearing testing measures ground settlement under an applied plate load. Results support assessment of load–settlement behaviour at the test location.

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  • NatTest LabSoil and earthworks testing

    Point Load Test

    Point load testing determines a rock strength index. Any estimate of uniaxial compressive strength requires an appropriate correlation.

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  • NatTest LabSoil and earthworks testing

    Proof Rolling Test

    Proof rolling identifies visible movement or weak areas in prepared ground under an agreed vehicle load. It is a field observation, not a direct measurement of soil strength.

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  • NatTest LabSoil and earthworks testing

    Soil Bulk Density Test

    Bulk density testing measures soil mass per unit total volume, including pore spaces. The report should distinguish bulk and dry density where required.

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  • NatTest LabSoil and earthworks testing

    Soil Compaction Test

    Compaction testing establishes the relationship between moisture content and dry density. It determines maximum dry density and optimum moisture content for the selected compaction method.

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  • NatTest LabSoil and earthworks testing

    Soil Testing

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  • NatTest LabSoil and earthworks testing

    Specific Gravity of Soil Test

    Specific gravity testing compares the density of soil solids with that of water. It is a dimensionless ratio used in geotechnical calculations.

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  • NatTest LabSoil and earthworks testing

    Triaxial Compression Test

    Triaxial testing measures soil strength and stress–strain behaviour under controlled confinement. Drainage and consolidation conditions are selected for the investigation.

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  • NatTest LabSoil and earthworks testing

    pH Value Test

    Soil pH testing measures acidity or alkalinity. Results support chemical assessment of the ground alongside other relevant tests.

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