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Cover of Preliminary Investigation of the Influence of Micro-cracking on Fatigue Life of Cemented Materials
Preliminary Investigation of the Influence of Micro-cracking on Fatigue Life of Cemented Materials
  • Publication no: AP-T198-12
  • ISBN: 978-1-921991-10-3
  • Published: 7 February 2012

Following the Austroads research reports prepared as part of TT1359: Cost-effective Structural Treatments for Rural Highways in June 2010 and TT1358 Strategic Review of Pavement Design, Austroads commissioned ARRB Group to undertake further research in the field of cemented materials for structural road bases. This Austroads research project TT1664: Cemented Materials Characterisation will report on the first year’s milestones (FY2010/11) of a three year research program (2010/11 to 2012/13).

  • 1. INTRODUCTION
  • 2. MATERIALS SELECTION
    • 2.1. Introduction
    • 2.2. Siltstone (Para Hills, SA)
    • 2.3. Granite (Tynong, VIC)
    • 2.4. Recycled Concrete (Alex Fraser, VIC)
    • 2.5. Basalt (Mt. Gambier, SA)
  • 3. EQUIPMENT AND TEST METHOD
    • 3.1. Specimen Preparation Method
      • 3.1.1. Material Splitting Procedure
      • 3.1.2. Laboratory Characterisation Process
      • 3.1.3. Mixing Procedure
      • 3.1.4. Slab Compaction and Cutting Procedures
      • 3.1.5. Curing
    • 3.2. Flexural Beam Test Methods
      • 3.2.1. Introduction
      • 3.2.2. Flexural Modulus Testing
      • 3.2.3. Flexural Strength/Breaking Strain Testing
      • 3.2.4. Flexural Fatigue Testing
      • 3.2.5. Modification to Flexural Fatigue Testing to Incorporate Micro-cracking
  • 4. RESULTS
    • 4.1. Introduction
    • 4.2. Flexural Modulus
    • 4.3. Flexural Strength/Breaking Strain
    • 4.4. Flexural Fatigue
      • 4.4.1. Introduction
      • 4.4.2. Standard Flexural Fatigue
      • 4.4.3. Modified Flexural Fatigue Testing Incorporating Levels of Micro-cracking
  • 5. DISCUSSION
  • 6. CONCLUSIONS AND RECOMMENDATIONS
    • 6.1. Conclusions
    • 6.2. Recommendation
  • References
  • Appendix A CHARACTERISATION OF MATERIALS
  • A.1 Siltstone Characterisation (Para Hills, SA)
  • A.2 Basalt Characterisation and Fact Sheet (Mount Gambier)
  • A.3 Granite Characterisation (Tynong, VIC)
  • A.4 Recycled Concrete Characterisation and Fact Sheet (Alex Fraser, VIC)
  • Appendix B FLEXURAL BEAM METHOD
  • B.1 Scope
  • B.2 Referenced Documents
  • B.3 Apparatus
  • B.4 Test Specimens
  • B.4.1 Specimen Dimensions
  • B.4.2 Specimen Preparation
  • B.5 Procedure
  • B.5.1 Modulus Testing
  • B.5.2 Fatigue Testing
  • B.6 Calculations
  • B.6.1 Flexural Modulus
  • B.6.2 Fatigue
  • B.7 Test Report
  • B.8 Notes on Test
  • Appendix C REGRESSION ANALYSIS
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