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Polished Stone Value (PSV)

  • PSV is a laboratory-based test conducted on the single stone fraction (10mm).
  • Adopted standard test method – SANS 5848
  • The test determines the micro texture of the aggregate which assists in the breaking, acceleration and turning of vehicles.

Aggregate Testing Services

  • Clay lumps and friable particles
  • Fine aggregate angularity
  • Sand equivalent test
  • Determination of the flakiness index of coarse aggregates
  • Determination of bulk density, apparent density and water absorption – course aggregate
  • Determination of bulk density, apparent density and water absorption – fine aggregate
  • Relative density of filler
  • Bulking Factor (Loose, compacted and rodded density)
  • Fine aggregate angularity
  • Relative density of fine aggregates
  • Relative density of course aggregates
  • Methylene blue test
  • Average least dimensions (ALD)
  • Fractured Faces
  • Particle size analysis of aggregates by sieving