Pavement

Cover of Technical Basis of Austroads Guide to Pavement Technology Part 2: Pavement Structural Design
Technical Basis of Austroads Guide to Pavement Technology Part 2: Pavement Structural Design
  • Publication no: AP-T98-08
  • ISBN: 978-1-921329-72-2
  • Published: 14 August 2008
The Austroads publication Guide to Pavement Technology, Part 2: Pavement Structural Design is intended to assist those required to plan and design new pavements. It was originally produced in 1987 as a result of review of the NAASRA Interim Guide to Pavement Thickness Design (1979). In 1992, the Austroads Pavement Design Guide was revised to include an updated procedure for the design of rigid pavements and also relevant portions of Chapter 6 (Pavement Materials) and Chapter 7 (Design Traffic). An essential element in the use of the Guide is a thorough understanding of the origins of the design procedures, their scope and limitations. Accordingly, this report contains five technical reports detailing the technical basis of both the 1992 and 2008 editions of the Guide.
  • FOREWORD
  • Technical Basis of Austroads Pavement Design GuideChapter 1: 1992 Guide Procedures for Design of Flexible Pavements
  • SUMMARY
  • CONTENTS
  • TABLES
  • FIGURES
  • 1. INTRODUCTION
  • 2. SETTING THE SCENE
    • 2.1. The Interim Guide to Pavement Thickness Design
    • 2.2. Establishment of a Working Group to Revise the IGPTD
    • 2.1. Base Concrete
    • 2.2. Subbase Types
    • 2.1. Scope
    • 2.2. Input Parameters
    • 2.3. Revised Design Charts Considering both Asphalt Fatigue andPermanent Deformation
    • 2.4. Revised Design Charts Considering Permanent Deformation Only
  • 3. GRANULAR PAVEMENTS WITH THIN BITUMINOUSSURFACINGS
    • 3.1. Origins of the CBR-Thickness-Traffic Chart
    • 3.2. Terminal Condition
    • 3.1. General
    • 3.2. Concrete Flexural Strength
    • 3.3. Traffic Loading
    • 3.4. Foundation Support
    • 3.5. Base and Subbase Debonding
    • 3.6. Concrete Shoulders
    • 3.7. Load Transfer at Joints
    • 3.1. Subgrade and Subbase Stiffness
    • 3.2. Design Traffic
    • 3.3. Concrete Shoulders
    • 3.4. Load Safety Factors
    • 3.1. Introduction
    • 3.2. Development of the Chart
    • 3.3. Comparison of Empirical and Mechanistic Design Charts
  • 4. DEVELOPMENT OF THE MECHANISTIC PROCEDURE
    • 4.1. Broad Issues
    • 4.2. Elastic Characterisation
    • 4.3. Performance Relationships
    • 4.4. Design Traffic
    • 4.5. Incorporation of Location-Specific Temperature Regime
    • 4.1. General
    • 4.2. Flexural Fatigue Analysis
    • 4.3. Erosion Analysis
    • 4.1. Response Model
    • 4.2. Elastic Characterisation
    • 4.3. Performance Relationships
    • 4.1. General
    • 4.2. Dowel and Tie Bars
    • 4.1. General
    • 4.2. Methodology
    • 4.3. Input Parameters
    • 4.4. Base Thickness Design
    • 4.5. Comparison between the 1998 Design Tables and the ExampleDesign Charts
  • 5. DEVELOPMENT OF OVERLAY DESIGN PROCEDURE
    • 5.1. Design Deflection Curves
    • 5.2. The Curvature Function
    • 5.3. Temperature Correction for Deflection and Curvature
    • 5.4. Reduction in Deflection Parameters due to Overlay Placement
    • 5.5. Adjustment of Asphalt Overlay Thickness to Allow for LocalityTemperature
    • 5.1. Units of Loading
    • 5.2. Traffic Load Distributions
  • REFERENCES
  • APPENDIX A ORIGINS OF UNBOUND GRANULARTHICKNESS CHART
  • APPENDIX B DMR NSW PROCEDURE FOR PAVEMENTTHICKNESS DESIGN IN 1947 – EXCERPTFROM BRITTON (1947)
  • APPENDIX C THE ORIGINS OF DESIGN DEFLECTIONCURVES –EXCERPT FROM JAMESON(1996)
  • Technical Basis of Austroads Pavement Design GuideChapter 2: 1992 Guide Procedures for Design of Rigid Pavements
  • SUMMARY
  • CONTENTS
  • TABLES
  • FIGURES
  • 1. GENERAL
  • 2. PAVEMENT TYPES
  • 3. DESIGN INPUT FACTORS
  • 4. DESIGN PROCEDURE METHODOLOGY
  • 5. REINFORCEMENT FOR CRCP
  • 6. OVERVIEW OF DESIGN RESULTS
    • 6.1. General
    • 6.2. Minimum Thickness Limit
    • 6.3. Maximum Wheel Load
    • 6.4. Influence of Concrete Shoulders
    • 6.5. Relative Influence of Traffic Volumes and Axle Loads
    • 6.6. Influence of Pavement Type
    • 6.1. Definition
    • 6.2. Procedures in 1992 the Guide
    • 6.3. Development of Procedures in the Draft 2001 Guide
    • 6.4. Development of Procedures in the 2004 Guide
  • REFERENCES
  • Technical Basis of Austroads Pavement Design GuideChapter 3: Guide to Pavement Technology Part 2 Pavement StructuralDesign
  • SUMMARY
  • CONTENTS
  • TABLES
  • FIGURES
  • 1. INTRODUCTION
  • 2. ESTABLISHMENT OF WORKING GROUPS TO REVISETHE 1987 GUIDE
  • 3. GRANULAR PAVEMENTS WITH THIN BITUMINOUSSURFACINGS
  • 4. DEVELOPMENT OF THE MECHANISTIC PROCEDUREFOR FLEXIBLE PAVEMENTS
  • 5. DESIGN TRAFFIC
  • 6. PROJECT RELIABILITY
  • 7. SUMMARY
  • 8. REFERENCES
  • APPENDIX A ORIGINS OF UNBOUND GRANULARTHICKNESS CHART
  • APPENDIX B CHARACTERISATION OF GRANULARMATERIALS AND DEVELOPMENT OF ASUBGRADE STRAIN CRITERION
  • APPENDIX C GRANULAR MATERIALS MODULI UNDERASPHALT AND CEMENTED MATERIAL(APRIL 1998)
  • APPENDIX D GRANULAR MATERIALS MODULI UNDERASPHALT AND CEMENTED MATERIAL(JUNE 2003)
  • APPENDIX E RELATIONSHIP BETWEEN UNCONFINEDCOMPRESSIVE STRENGTH AND FLEXURALMODULUS FOR CEMENTED MATERIALS
  • APPENDIX F DISCUSSION NOTE ON ESTIMATINGCEMENTED MATERIALS MODULUS FROMUCS (JUNE 2000)
  • APPENDIX G DEVELOPMENT OF RELATIONSHIP TOADJUST ITT MODULUS FROM TESTLOADING RATE TO OPERATING SPEED INSERVICE
  • APPENDIX H DEVELOPMENT OF RELATIONSHIP TOADJUST ITT MODULUS FROMMEASUREMENT TEMPERATURE TOWMAPT
  • APPENDIX I DEVELOPMENT OF RELATIONSHIP TOADJUST ITT MODULUS FROM TESTSPECIMEN AIR VOIDS TO IN-SERVICE AIRVOIDS
  • APPENDIX J DEVELOPMENT OF PRESUMPTIVETRAFFIC LOAD DISTRIBUTIONS
  • Technical Basis of Austroads Pavement Design GuideChapter 4: 2008 Guide Procedures for Design of Rigid Pavements
  • SUMMARY
  • CONTENTS
  • TABLES
  • FIGURES
  • 1. GENERAL
  • 2. PAVEMENT TYPES
  • 3. THICKNESS DETERMINATION
  • 4. BASE THICKNESS DESIGN PROCEDURE
  • 5. REINFORCEMENT DESIGN PROCEDURES
  • REFERENCES
  • Technical Basis of Austroads Pavement Design GuideChapter 5: Development of Design Charts for Lightly Trafficked Roads
  • SUMMARY
  • CONTENTS
  • TABLES
  • FIGURES
  • 1. INTRODUCTION
  • 2. DESIGN CHARTS FOR ASPHALT SURFACEDPAVEMENTS
  • 3. GRANULAR PAVEMENTS WITH THIN BITUMINOUSSURFACINGS
  • 4. RIGID PAVEMENT DESIGN CHARTS
  • 5. SUMMARY
  • REFERENCES
  • APPENDIX A 1998 DESIGN CHART INPUT PARAMETERSAND TRAFFIC LOAD DISTRIBUTIONS
  • APPENDIX B REVISED FLEXIBLE EXAMPLE DESIGNCHARTS CONSIDERING ASPHALT FATIGUEAND PERMANENT DEFORMATION
  • APPENDIX C REVISED FLEXIBLE PAVEMENT EXAMPLEDESIGN CHARTS CONSIDERINGPERMANENT DEFORMATION ONLY
  • APPENDIX D SUMMARY OF COMPARISONS BETWEENTHE EMPIRICAL DESIGN CHARTS AND THECHARTS OBTAINED BY THE 2008AUSTROADS GUIDE MECHANISTICPROCEDURE
  • INFORMATION RETRIEVAL