Laboratory

SRS Roads are able to offer a comprehensive testing and reporting service through SAMI Bitumen Technologies – a subsidiary within the COLAS Australia group who operate a NATA accredited laboratory (Accreditation No. 5598) with a wide and comprehensive range of bitumen and asphalt testing equipment.

Importantly, SAMI Bitumen Technologies has an enviable store of intellectual know-how that is applied to its products, processes and services for research and development as well as quality assurance.

A wide range of clients including leading road authorities utilise SAMI Bitumen Technologies independent laboratory services. In particular, SAMI Bitumen Technologies specialises in developing innovative solutions to maximise the performance of proprietary asphalt mix and spray seal designs and to optimise the benefits from SAMI Bitumen Technologies supplied products and processes.

lab1
 

Binders/Bitumen Testing

  • Determination of penetration of residual bitumen
  • Cone penetration
  • Resilience of single component hot applied membrane
  • Softening point of bituminous and resinous materials
  • Torsional recovery of PMB
  • Viscosity of bituminous materials by Brookfield viscometer
  • Flow test for rubber bitumen mixes
  • Determination of elastic recovery and viscosity of PMB
  • Segregation test for PMB
  • Adhesion of binder to stone
  • Determination of ductility
  • Determination of density
  • Laray falling rod viscosity
  • Plastic limit
  • Stability test
  • PMB sampling
  • Rolling thin film oven test
  • Bitumen sampling
  • Flow properties of crack filler
  • Compressive limit of PMB
  • Toughness (ARRB extensiometer)
  • Loss of heating of PMB
  • Thermal stability
  • Protocol for PMB handling
  • Matter insoluble in toluene
  • Calculation of penetration index
  • Ease of remixing
  • Viscosity-Temperature chart
  • Rubber content of scrap rubber
lab2
 

Aggregate Testing

  • Resistance to stripping cover aggregates and binders
  • Average least dimension 10mm
  • Average least dimension 5mm & 7mm
lab4
 

Emulsion/Cutback Bitumen/ Pre-coat Testing

  • Emulsion testing
  • Particle charge
  • Residue from evaporation
  • Calc non aques volatiles content
  • Consistency
  • Sieve residue
  • Water content
  • Sedimentation
  • Stone coating ability and water resistance
  • Breaking behaviour by setting time
  • Recovery of residue from bitumen emulsion
  • Distillation of cutback asphaltic products
  • ph @ 25C
  • Alternative residue by evaporation
  • Particle size distribution
  • Emulsion sampling
  • Viscosity of emulsion and cutback bitumen
  • Viscosity of emulsion by Brookfield viscometer
  • Stability to mixing
  • Homogeneity of precoat
  • Active component in bitumen precoat
lab3
 

Asphalt/Cold Mix Testing

  • AG Mixes (cold mix)
  • Bitumen binder recovery test using toluene
  • Asphalt binder recovery using trichloroethylene
  • Sampling of asphalt
  • Mixing and quartering
  • Compaction using a gyratory compactor
  • Reflux method, bitumen content and aggregate grading
  • Use of Marshall compactor
  • Maximum density – water displacement
  • Voids and density relationships for compacted asphalt mixes (Volumetrics)
  • Bulk density – pre-saturation method
  • Bulk density – mensuration method
  • Dynamic creep test
  • Resilient modulus of asphalt
  • Wheel tracking test
  • Fatigue and flexural properties
  • Binder film thickness
  • Slab compaction
lab5