NCHRP Report 669: Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays
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NCHRP Report 669:
Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays
(2010)
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Overview

Authors

Description

TRB's National Cooperative Highway Research Program (NCHRP) Report 669: Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays explores mechanistic-based models for predicting the extent and severity of reflection cracking in hot-mix asphalt overlays.

Appendices A through T to NCHRP Report 669 are available online. The titles of the appendices are as follows:

Appendix A: Program Flow Charts

Appendix B: Pavement Temperature Prediction

Appendix C: Categorization of Traffic Loads

Appendix D: Cumulative Axle Load Distribution as a Function of Tire Footprint Length

Appendix E: Determination of Hourly Traffic Numbers

Appendix F: Artificial Neural Network Models of Stress Intensity Factors

Appendix G: Binder and Mixture Properties

Appendix H: Fracture Properties of Asphalt Mixtures

Appendix I: Viscoelastic Thermal Stress Computation

Appendix J: Collection of Test Sections and Field Performance Data

Appendix K: Reflection Cracking Amount and Severity Model

Appendix L: Calibration of the Reflection Cracking Amount and Severity Model

Appendix M: Calibrated Parameters of the Reflection Cracking Amount and Severity Model

Appendix N: Calibration of the Computational Model to Field Data

Appendix O: User's Guide to the Reflection Cracking Model

Appendix P: User's Guide to the Computational Model to Field Data Calibration Program

Appendix Q: Finite Element Program to Calculate Stress Intensity Factor

Appendix R: Evaluation of Available Reflection Cracking Models

Appendix S: Sensitivity Analysis of Designing Program

Appendix T: The Comparison of Field Data and Predicting Results

Topics

  • Transportation — Materials
  • Transportation — Pavements

Publication Info

72 pages | 8.5 x 11
Contents

Table of Contents

skim chapter
Front Matter i-xi
Organization of the Report 1-1
Material Properties 2-2
Calibration to Field Data 3-3
Use in Design 4-4
Available Reflection Cracking Models 5-5
Selection of a Reflection Cracking Model 6-6
Process of Constructing a Calibrated Reflection Cracking Model 7-7
Collection of Pavement Structure Data 8-9
Traffic Data Collection 10-10
Axle Load Distribution Factor 11-12
Categorizing Traffic Load 13-13
Finite Element Method for Calculating SIF 14-16
Method of Predicting SIF 17-18
Modeling of Cumulative Axle Load Distribution 19-19
Probability Density on Tire Patch Length 20-25
Reflection Cracking Amount and Severity Model 26-26
Calibration of Field Reflection Cracking Model 27-27
System Identification Process 28-28
Parameter Adjustment and Adaption Algorithm 29-29
Calibrating Reflection Cracking Model of Test Sections 30-32
Heat Transfer in Pavement 33-33
The Bottom Boundary Condition 34-34
Stiffness, Tensile Strength, Compliance, and Fracture Properties of Mixtures 35-35
Artificial Neural Network Algorithms for Witczak's Complex Modulus Models 36-37
Models of Paris and Erdogan's Law Fracture Coefficients A and n 38-38
Computational Method for Crack Growth Due to Traffic 39-40
Computational Method for Viscoelastic Thermal Stresses 41-41
Computation-to-Field Calibration Coefficients 42-43
Validation of the Calibration Coefficients 44-47
Mechanistic Prediction of Crack Growth 48-48
Calibration of Calculated Overlay Life to the Observed Distress 49-49
Predictions of Overlay Reflection Cracking 50-54
Calibration of the Computational Model to Field Data 55-55
Suggested Research 56-57
References 58-59
Appendices 60-60
Abbreviations used without definitions in TRB publications 61-61

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