Pavement

Cover of The Influence of Multiple Axle Loads on the Performance of an Unbound Granular Pavement under Accelerated Loading: Construction of Test Pavements
The Influence of Multiple Axle Loads on the Performance of an Unbound Granular Pavement under Accelerated Loading: Construction of Test Pavements
  • Publication no: AP-T187-11
  • ISBN: 978-1-921709-87-6
  • Published: 2 August 2011

Recognising the importance to pavement designers, asset managers and policy makers of an improved understanding of the relationship between different multiple axle group loads (single, tandem, triaxles, etc.) and road pavement performance, Austroads initiated a research project to improve the understanding of these loads on Australian flexible pavement types.

In September 2008 a test pavement was constructed at the current ALF site in Dandenong South, Melbourne. The test pavement is composed of a 300 mm thick crushed rock base overlying a 400 mm layer of imported clay subgrade. Sufficient pavement area was constructed to allow the future testing of 12 experiments with the ALF machine, with each experiment having the standard 12 m length used by the machine.

This report details the construction of the test pavement, and collates an extensive amount of data collected during the construction works.

  • 1. INTRODUCTION
  • 2. MATERIAL SELECTION AND PAVEMENT DESIGN
    • 2.1. Pavement Configuration
    • 2.2. Subgrade Material Selection
    • 2.3. Base Material Selection
    • 2.4. Layout of Test Pavements
      • 2.4.1. ALF Site
      • 2.4.2. Layout
    • 2.5. Pre-existing Pavements
    • 2.6. Final Pavement Configuration
  • 3. CONSTRUCTION OVERVIEW
    • 3.1. General Construction Approach
    • 3.2. Equipment Use During Pavement Construction
      • 3.2.1. Excavator
      • 3.2.2. Profiler
      • 3.2.3. Skid Steer Loader
      • 3.2.4. Grader
      • 3.2.5. Rollers
      • 3.2.6. Level Measurement Control
      • 3.2.7. Density Testing
    • 3.3. Construction Dates
  • 4. CONSTRUCTION OF PAVEMENT
    • 4.1. Removal of Shed Wall Panels
    • 4.2. Removal of Sample Material from Existing Pavements
    • 4.3. Removal of Existing Pavements
    • 4.4. Removal of Existing Surfacings from Borrow Pit
    • 4.5. Removal of Old Pavement Materials from Borrow Pit
    • 4.6. Reclamation of Clay Subgrade Material from Borrow Pit
    • 4.7. Restoration of Borrow Pit
    • 4.8. Construction of New Clay Subgrade
    • 4.9. Construction of New Base Layer
  • 5. SPRAYED SEAL DESIGN AND CONSTRUCTION
    • 5.1. General
    • 5.2. Prime Design
    • 5.3. Application of Prime
    • 5.4. Seal Design
    • 5.5. Application of Sprayed Seal
  • 6. CONSTRUCTION EVALUATION
    • 6.1. General
    • 6.2. Level Thickness Data
    • 6.3. Nuclear Density/Moisture Gauge Results
  • 7. CONCLUSIONS AND RECOMMENDATIONS
  • REFERENCES
  • APPENDIX A PROPERTIES OF BASE MATERIAL
  • APPENDIX B DESIGN OF SPRAYED SEAL
  • APPENDIX C RELATIVE LEVELS OF PAVEMENT LAYERS
  • APPENDIX D DENSITY AND MOISTURE CONTENT DATA