HMA IMPLEMENTATION

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HMA IMPLEMENTATION

• July 2000

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INTRODUCTION

• Current Status
• Document Overview
• Implementation Plan

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INTERIM GUIDELINES

• 1. One Mix Does Not fit All
• Design Objectives
• Design Mix to Suite Application

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INTERIM GUIDELINES

• 2. Recognise Variablity
• Compact Program
• Density Over Time
• Appropriate Testing

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INTERIM GUIDELINES

• 3. Recognise Binder-Filler Interaction
• Increase Vicosity
• During Compaction
• In Service
• 4. Marshall Compaction Curve
• 150 Blows for Most Mixes Apps.
• 300 Gyrations - Heavy Traffic

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INTERIM GUIDELINES

• 5. Simple Performance Testing
• Confined Impact Testing
• ITS
• 6. Sophisticated Performance Testing
• Rut Testing
• ALS
• Fatigue

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IMPLEMENTATION

• Doc Distribution Philosophy - One copy per
  Company - Careful Use
• Client Assistance Required
• Overall Co-ordination PMG
• Three Seminars
• Implementation Trouble -shooter Rapporteur - MC
  Barnard
• Final Guidelines - mid 2001