NATA Accredited Geotechnical Testing Facility


Geotesta’s laboratory is a NATA accredited facility providing a wide range of construction material testing services in house. Testing is conducted using state of the art equipment and experienced geotechnical technicians and engineers.

We provide the following testing:

  • CBR Testing
  • Compaction testing – standard and modified
  • Shrink swell index testing
  • Sampling of aggregates
  • Sampling from stockpile, pavement
  • Particle size distribution
  • Sieve analysis; material finer than 75μm
  • Disturbed sampling from stockpile, pavement, windrow; undisturbed sampling
  • Site selection by random and stratified random number
  • Sample preparation; pre-treatment by repeated compaction
  • Classification tests Section A2 (laboratory tests only) Moisture content (oven method, microwave); moisture content correlation method; liquid limit (Casagrande); plastic limit; plasticity index; linear shrinkage; particle density; sieve analysis; description, identification and classification of soils
  • Fine particle analysis
  • Hydrometer analysis
Laboratory and Earthwork