Significant Findings from Full-Scale Accelerated Pavement Testing (2004)

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CONTENTS 1 SUMMARY 5 CHAPTER ONE INTRODUCTION Background, 5 Scope of the Study, 6 Information Collection, 6 Analysis of the Questionnaires, 7 Accelerated Pavement Testing Programs Introduced Since 1996, 8 Closing Remarks, 10 11 CHAPTER TWO EVALUATION, VALIDATION, AND IMPROVEMENT OF STRUCTURAL DESIGNS Introduction, 11 Questionnaire Survey, 11 Applications of Accelerated Pavement Testing to Asphalt Pavement Designs, 12 Applications of Accelerated Pavement Testing to Concrete Pavements, 13 Applications of Accelerated Pavement Testing to Composite Structures, 15 Summary, 18 19 CHAPTER THREE VEHICLE–PAVEMENT–ENVIRONMENT INTERACTION Introduction, 19 Questionnaire Survey, 19 Elements of the Vehicle–Pavement–Environment System, 19 Trafficking, 20 Load Composition and Configuration (Single or Multiple Axles), 26 Environmental Impact, 26 Minnesota Road Research Project—A Comprehensive Case Study of Vehicle–Pavement–Environment Interaction, 35 Summary, 36 37 CHAPTER FOUR EVALUATION OF MATERIALS AND TESTS Introduction, 37 Questionnaire Survey, 37 Material Characterization, 38 Current Research, 45 Summary, 46 47 CHAPTER FIVE ENHANCEMENT OF MODELING IN PAVEMENT ENGINEERING Introduction, 47 Questionnaire Survey, 47 Modeling Pavement Damage, 47

Modeling of Accelerated Pavement Testing Subgrade Rutting Performance, 49 Modeling of Accelerated Pavement Testing Asphalt Rutting Performance, 54 Accelerated Pavement Testing Modeling of Asphalt Fatigue and Cracking Performance, 58 Elasto-Plastic Behavior of Unbound Materials, 60 Concrete Modeling, 60 Summary, 61 63 CHAPTER SIX DEVELOPMENT AND VALIDATION OF REHABILITATION, CONSTRUCTION, AND MAINTENANCE STRATEGIES Introduction, 63 Questionnaire Survey, 63 Rehabilitation Designs, 63 Construction and Maintenance Issues, 67 Summary, 70 71 CHAPTER SEVEN PAVEMENT ENGINEERING APPLICATIONS AND ISSUES Introduction, 71 Relationship of Accelerated Pavement Testing to In-Service Pavements with Conventional Trafficking, 71 Considering Some Constraints in the Process of Transformation of Test Findings Between Trafficking Systems, 74 Failure Criteria, 76 Relationship Between Accelerated Pavement Testing and Long-Term Pavement Performance Studies, 76 Application of Accelerated Pavement Testing to Block Pavers, 78 Application of Accelerated Pavement Testing to Airport Pavements, 78 Summary, 79 81 CHAPTER EIGHT IMPROVEMENT OF PAVEMENT ECONOMICS AND MANAGEMENT THROUGH ACCELERATED PAVEMENT TESTING APPLICATIONS Introduction, 81 Questionnaire Survey, 81 Examples of Pavement Economic Gains Through Accelerated Pavement Testing, 83 Some Lessons from In-Service Highway Field Accelerated Pavement Testing Trials, 85 Enhancement of Pavement Management System Procedures, 86 Development in Accelerated Pavement Testing-Related Technologies, 86 Development in Accelerated Pavement Testing-Related Databases and Technology Transfer, 86 Some Current and Planned Future Accelerated Pavement Testing Applications, 87 Some International Trends, 89 Closing Remarks, 90 91 CHAPTER NINE CONCLUSIONS 93 REFERENCES 102 TOPICAL BIBLIOGRAPHY

118 GLOSSARY 120 ABBREVIATIONS AND ACRONYMS 122 APPENDIX A SURVEY QUESTIONNAIRE 135 APPENDIX B SUMMARY OF QUESTIONNAIRE RESPONSES 137 APPENDIX C GRAPHICAL REPRESENTATION OF ANSWERS TO SELECTED QUESTIONS BY RESPONDENTS TO THE QUESTIONNAIRE SURVEY (SEE APPENDIX A) 164 APPENDIX D SUMMARY OF ANSWERS TO SELECTED QUESTIONS BY RESPONDENTS TO THE QUESTIONNAIRE SURVEY 174 APPENDIX E CHARACTERISTICS OF ACCELERATED PAVEMENT TESTING FACILITIES ESTABLISHED SINCE 1996 183 APPENDIX F ACCELERATED PAVEMENT TESTING SYSTEMS WITH ARTIFICIAL COOLING AND/OR HEATING CONTROL UNITS 185 APPENDIX G SUMMARY OF ACCELERATED PAVEMENT TESTING OBJECTIVES AND APPLICATIONS 194 APPENDIX H IMPLEMENTATION OF THE RESULTS OF ACCELERATED LOADING FACILITY TRIALS INTO PRACTICE AND THE RELATIONSHIP BETWEEN ACCELERATED PAVEMENT TESTING AND LONG-TERM PAVEMENT PERFORMANCE TRIALS 197 INDEX