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Cover of Post-ageing Characterisation of Sprayed Sealing Binders: A Laboratory Study
Post-ageing Characterisation of Sprayed Sealing Binders: A Laboratory Study
  • Publication no: AP-T270-14
  • ISBN: 978-1-925037-75-3
  • Published: 12 August 2014

This report presents the results of a laboratory study that was conducted as part of the development of a new-long term ageing (durability) test for bituminous binders used in sprayed seals in Australia.

Among the number of test methods reviewed and assessed in earlier studies, a test method known as the dynamic shear rheometer (DSR) flow test was found to be the most appropriate and was used to characterise binders that were ageing treated using a pressurised ageing vessel (PAV). Chemical analysis tests known as Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC) were also conducted to provide information about the chemical processes that occurred during PAV ageing treatment.

The results obtained during this study will provide an important database for a field performance correlation study (using a field trial site where the tested binders have been placed), which is scheduled for 2014-15.

  • 1. Introduction
    • 1.1. Ageing of Binder and Durability Test Method
    • 1.2. Australian Durability Test Method: Problem Statement
    • 1.3. Development of New Durability Test Method: Stage 1
    • 1.4. Development of New Durability Test Method: Stage 2
      • 1.4.1. Year 2 of Stage 2: About This Report
  • 2. Background Information
    • 2.1. Definition of Low Temperature Characterisation Tests
    • 2.2. Dynamic Shear Rheometer
    • 2.3. DSR Flow Test
    • 2.4. Critical Tip Opening Displacement (CTOD) Test
    • 2.5. CTOD Test and Australian Extensiometer
    • 2.6. Selection of Candidate Test Methods
    • 2.7. Determination of Test Temperature
  • 3. Materials
  • 4. PAV Ageing Treatment Method
    • 4.1. PAV Ageing Regime for the New Durability Test
    • 4.2. Shorter-term PAV Ageing Regime
  • 5. DSR Flow Tests: Test Procedure and Derived Test Parameters
    • 5.1. Preparation of Samples for DSR testing
    • 5.2. DSR Test Conditions
    • 5.3. Test Parameters Obtained from DSR Flow Tests
      • 5.3.1. Yield Energy
      • 5.3.2. Stress Ratio
  • 6. DSR Flow Mode Tests: Results and Analysis
    • 6.1. Yield Energy Values
    • 6.2. Stress Ratio Results
    • 6.3. Summary
  • 7. Extensiometer CTOD Tests: Test Procedure and Issues
    • 7.1. Sample Preparation
    • 7.2. Test Procedure and Data Interpretation
    • 7.3. Extensiometer CTOD Test: Issues and Limitations
  • 8. Chemical Property Investigations
    • 8.1. Introduction
      • 8.1.1. Fourier Transform Infrared (FTIR) Spectroscopy
      • 8.1.2. Gel Permeation Chromatography (GPC)
    • 8.2. Test Procedures
      • 8.2.1. FTIR Spectroscopy
      • 8.2.2. Gel Permeation Chromatography (GPC)
  • 9. FTIR and GPC: Test Results and Analysis
    • 9.1. FTIR Spectroscopy Test Results and Analysis
      • 9.1.1. Spectral Changes on PAV Ageing
      • 9.1.2. Quantitative Analysis of Spectral Changes
    • 9.2. GPC Test Results and Analysis
  • 10. Summary and Conclusions
  • References
  • Appendix A DSR Flow Test Results
  • Appendix B FTIR Chemical Assignments
  • Appendix C Other FTIR Spectroscopy Results
  • Appendix D Other GPC Test Results