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CONTENTS 1 CHAPTER 1 Project Assessment Manual 1 Introduction 3 Pavement Distress Survey 12 Pavement Rut Depth and Roughness 15 Nondestructive Testing via the Falling Weight Defl ectometer (FWD) 28 Ground-Penetrating Radar (GPR) 43 Pavement Cores 44 Dynamic Cone Penetrometer (DCP) 49 Subgrade Soil Sampling and Tests 53 Traffi c Loads for Design 57 Construction Productivity and Traffi c Impacts 81 Life-Cycle Assessment (Environmental Accounting) 93 Miscellaneous Material Properties 94 References 99 CHAPTER 2 Flexible Pavement Best Practices 99 Introduction 100 Hot-Mix Asphalt (HMA) Renewal Strategies 100 General Guiding Principles 101 HMA Overlays over Existing HMA Pavements 103 HMA over Reclaimed HMA Pavement 107 HMA over Reclaimed HMA Pavement and Specifi cations 107 HMA Overlays over Existing HMA-Surfaced Composite Pavements 108 HMA over Crack-and-Seat Jointed Plain Concrete (JPC) Pavements 111 HMA over Saw, Crack, and Seat Jointed Reinforced Concrete (JRC) Pavements 114 HMA over Rubblized Concrete Pavements
122 HMA over Continuously Reinforced Concrete (CRC) Pavements 123 Added Lanes and Approaches for Adjacent Structures 130 Structural Design Criteria to Achieve Long Life 134 HMA Mix Design Criteria to Achieve Long Life 139 HMA Stripping: Causes, Assessment, and Solutions 147 Project Evaluation 152 HMA Construction Quality Control 156 Summary 159 References 169 CHAPTER 3 Rigid Pavement Best Practices 169 Introduction 173 Rigid Pavement Renewal Strategies 173 Supporting Data and Practices 183 Concepts for Developing Long-Life Renewal Strategies 186 Material Considerations 199 Unbonded Concrete Overlays of Concrete Pavements 217 Unbonded Concrete Overlays of Hot-Mix Asphalt Concrete Pavements 220 Added Lanes and Transitions for Adjacent Structures for Unbonded PCC Overlays over Existing Concrete and HMA Pavements 224 Best Practices Summary 225 References 229 CHAPTER 4 Guide Specifications 229 Introduction 230 Specifications Not in the AASHTO Guide Specifications 237 Elements for Use with AASHTO Guide Specifications 250 AASHTO and State DOT Specification Summaries 340 CHAPTER 5 Life-Cycle Cost Analysis 340 Introduction 340 Life-Cycle Cost Analysis (LCCA) Procedure 349 References 350 CHAPTER 6 Emerging Pavement Technology 350 Introduction 350 Rigid Pavements 356 Flexible or Composite Pavements 358 Cost Comparisons 358 Summary 360 References
