Victoria Chapter

Light Weight Deflectometer – Measuring Dynamic Modulus and CBR on-site Immediately

Robin Power

The Light Weight Deflectometer can be used for measuring the bearing capacity (deflection) and insitu CBR of subgrade/subsoils and unbound granular base layers, granular layers and backfilling materials. Robin’s talk will cover the following topics;

  • What is the Light Weight Deflectometer
  • What does it do?
  • Where did the Light Weight Deflectometer come from?
  • What does it simulate?
  • What results do you get? Explanation of results graphs. Range limitations.
  • How is it part of an integrated compaction control system
  • Relationship with other devices
  • What is the CBR Extension?
  • What is the relationship between the Dynamic Modulus and CBR?
  • What results do you get? Explanation of results graphs. Range limitations.
  • What are the influences on the results?
  • How do you calibrate the equipment?
  • Technical standards
  • How is the device used?
  • Advantages and limitations

Engineers Australia members participating in AGS technical sessions can record attendance on their personal CPD logs. Members should refer to Engineers Australia CPD policy for details on CPD types, requirements and auditing guidelines.