Our modern laboratory in Doncaster is able to provide classification on a wide range of soil, rock and aggregates using the latest tools and technology available.
The Benefits of Classification Testing
Many large-scale construction projects require the correct testing of material properties by licensed professionals to meet regulatory requirements.
- Ensuring the materials are suitable for the required uses
- Identification of possible areas of concern
- Adhering to quality and legal requirements
- Keeping your project compliant
- Reducing the risk of future financial penalties
- Completing projects to budget and deadlines
Aggregate Classification
- Sampling
- Moisture/water content
- Particle size distribution
- Flakiness index
- Constituents of recycled aggregates
- Density and water absorption
- Loose bulk density
- Resistance to fragmentation
- Aggregate crushing value
- Ten percent fines value
- Aggregate impact value
- Magnesium sulphate
Concrete Classification
- Unbound and hydraulically bound mixtures
- Reference density and water content
- Proctor compaction
- Vibrating hammer
- California bearing ratio and swelling
- Moisture content value
- Concrete
- Compressive strength of concrete cores
Rock Classification
- Automated grinding for satisfying strict dimensional tolerances
- Moisture/water content
- Porosity and density
- Point load index
- Uniaxial compressive strength
- Triaxial compressive strength
- Swelling pressure and strain
- Direct shear strength
- Indirect tensile strength
- Sound wave velocity – propagation of compressive and shear waves
- Elastic parameters (shear and Young’s moduli, Poisson’s ratio)
- Cerchar abrasivity
- Slake durability and jar slaking
- Thermal and electrical resistivity
Soil Classification
- Moisture/water content
- Particle size distribution – sieve and sedimentation analysis
- Liquid and plastic limits (Atterberg limits) – 1 or 4 point
- Bulk and dry density – direct and immersion
- Particle density (previously known as specific gravity)
- Desiccation – filter paper suction method
- Compaction
- Chalk crushing value
- California bearing ratio
- Dry density/moisture content relationship:
- 2.5-kg and 4.5-kg rammer
- Vibrating hammer
- Moisture condition value – (1 point at natural moisture condition or 5-point calibration)
- Compressibility
- Oedometer consolidation (one-dimensional)
- Oedometer swelling
- Isotropic consolidation in a triaxial cell
- Swell or collapse/soil expansivity
- Permeability
- Constant (or falling) head permeability
- Triaxial permeability
- Total stress
- Laboratory vane and torvane – shear strength
- Direct and residual shear strength
- Small shear (60 mm × 60 mm) – direct shear strength
- Large shear box (300 mm × 300 mm) – direct shear strength
- Ring shear – residual shear strength
- Unconfined compressive strength (38-mm to 100-mm specimens)
- Quick undrained triaxial compression – single or multistage
- Effective stress
- Consolidated undrained
- Consolidated drained
- 38-mm to 100-mm specimens
- With or without mid-height pore pressure measurements
Durability - Erodibility by dispersion method
- Miscellaneous
- Redox potential
- Thermal and electrical resistivity
