NCHRP Report 646: Validating the Fatigue Endurance Limit for Hot Mix Asphalt
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  • Status: Final Book
  • 139 pages
  • Downloads: 75
NCHRP Report 646:
Validating the Fatigue Endurance Limit for Hot Mix Asphalt
(2010)
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Overview

Authors

Description

TRB's National Cooperative Highway Research Program (NCHRP) Report 646: Validating the Fatigue Endurance Limit for Hot Mix Asphalt explores the existence of a fatigue endurance limit for hot mix asphalt (HMA) mixtures, the effect of HMA mixture characteristics on the endurance limit, and the potential for the limit's incorporation in structural design methods for flexible pavements.

Topics

  • Transportation — Materials
  • Transportation — Pavements
Contents

Table of Contents

skim chapter
Front Matter i-xi
Summary 1-4
Introduction 5-5
Scope 6-6
Arguments for the Existence of the Endurance Limit 7-8
Strategies to Produce Long-Life Pavements 9-11
Laboratory Fatigue Tests and Analysis Methods 12-12
Modeling Fatigue and Relationship to Field Performance 13-14
Introduction 15-15
Materials 16-16
Test Methods 17-19
Extrapolation Methods to Predict Fatigue Life 20-31
Existence of the Endurance Limit 32-40
Estimate of Precision of Beam Fatigue Tests 41-41
Indirect Tensile Strength as a Surrogate for Endurance Limit Determination 42-43
Dynamic Modulus and Phase Angle Master Curves 44-48
Damage Characteristic Curve 49-52
Evaluation of Endurance Limit 53-58
Including the Endurance Limit Design Premise into Mechanistic-Empirical-Based Pavement Design Procedures 59-61
Defining the Endurance Limit - A Survivability Analysis 62-65
Updated Survivability Analysis Using LTPP Data 66-72
Estimate of Shift Factors between Laboratory Tests and Field Performance 73-82
Sensitivity of Mechanistic-Empirical Pavement Design Methods to the Endurance Limit 83-87
Considerations for Incorporating the Endurance Limit into M-E Design Procedures 88-90
Recommendations 91-92
References 93-95
Appendix A - Proposed Standard Practice for Predicting the Endurance Limit of Hot Mix Asphalt (HMA) for Long-Life Pavement Design 96-104
Appendix B - Proposed Standard Practice for Predicting the Endurance Limit of Hot Mix Asphalt (HMA) by Pseudo Strain Approach 105-110
Appendix C - Proposed Standard Practice for Extrapolating Long-Life Beam Fatigue Tests Using the Ratio of Dissipated Energy Change (RDEC) 111-115
Appendix D - NCHRP 9-38 Beam Fatigue 116-120
Appendix E - Construction of Characteristic Curve 121-125
Appendix F - NCHRP 9-38 Beam Fatigue Round Robin 126-127
Abbreviations used without definitions in TRB publications 128-128

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