Skip to contentUnited States Department of Transportation - Federal Highway AdministrationSearch FHWAFeedback

Pavements

Expert Task Group on Asphalt Mixtures & Construction; Asphalt Binders; and Models Technology August 2001 Attachment K - Superpave 2005

(ppt version 78 kb)


Slide 1

Superpave Mix/Aggregate ETG

"Superpave 2005"

August 2001 Status Report


Slide 2

Superpave 2005

Superpave will be a fully integrated
asphalt mix design and construction
system that:

(1) recommends binder type (including
modified binders
) and mixture
proportions based on anticipated
environmental and loading conditions
and layer location;


Slide 3

Superpave 2005

Goal 1 - Modified Binders

  • FHWA 90-02, 90-07, 90-09
  • Proposed Additional Work
    • National Pooled Fund - ALF
      • Test to New Values
      • 2000 Design Guide Validation
    • NCHRP x-xx - Modified Binder Aging
      • Binder Aging Revisited
      • Binder Rate of Aging
  • Complete Final Specification (MP1 Rev)
    • Dec 2003 - July 200

Slide 4-5

Superpave 2005

Goal 1 - Mix Design

  • 9-12 RAP (complete)
  • 9-14 Restricted Zone (complete)
  • 90-01 AVK
  • 90-03 Tenderness
  • 90-05 Fine Aggregate SpG
  • 9-9(1) Gyration Levels - Ndesign;
  • 9-25, 9-27, 9-31 Volumetrics
  • Additional topics
    • Synthesis on Aggregate Optimization (Blending)
    • 4.75 mm Superpave Mix?
    • Low Traffic Guidelines?
  • Complete by Dec 2004

Slide 6

Superpave 2005

Superpave will be a fully integrated
asphalt mix design and construction
system that:

(2) predicts the ability of a mix to
withstand rutting, fatigue, thermal
cracking, and moisture damage
through a series of laboratory tests
and mechanistic models;


Slide 7-8

Superpave 2005

Goal 2 - Moisture Sensitivity

  • Key Ongoing Work
    • WRI Research
    • 9-34 ECS and SPT
  • No additional projects proposed
  • Work complete (?) by Dec 2004
  • Residual Issues
    • Field detection and identification
    • Research framework reconstructed

Slide 9-10

Superpave 2005

Goal 2 - Simple Performance Tester

  • Key Ongoing Work
    • 9-19; 9-29 SPT for Mix Design
      • Design, Procure, Evaluate
      • Complete ruggedness
  • Proposed Additional Work
    • National Pool Fund Procurement
  • Competed by Dec 2004
  • Residual Issue
    • Acceptance of test and its results
    • Revisit volumetric and gradation issues
      in light of simple performance testing

Slide 11-12-13

Superpave 2005

Goal 2 - Performance Model Validation

  • Key Ongoing Work
    • 1-37A 2002 Design Guide
    • 9-19 Models Development
    • 9-23 Environmental Effects
    • 9-30 Experimental Design
    • 9-33 Superpave Mix Analysis Method,
      Software, and Manual
  • Proposed Additional Projects
    • Laboratory Testing Validation Program
    • Final ICM Integrated into Mix Analysis
  • Completed July 2005
  • Residual Issues
    • Local knowledge and local adaptation
    • Local performance data collection
      and interpretation

Slide 14

Superpave 2005

Superpave will be a fully integrated
asphalt mix design and construction
system that:

(3) integrates the binder and mix
requirements into a performance-based
quality control specification system
during construction.


Slide 15

Superpave 2005

Goal 3 - PRS

  • 9-22 PRS Beta & Evaluation
    • Integration with validated 2002 models
  • Completed July 2005
  • Residual Issue
    • Local knowledge and local adaptation
    • Local performance data collection and
      interpretation

Slide 16

Superpave 2005

Final Superpave Products

  • Mix Design Guide
  • Mix Design w/Structural Design System
  • Mix Design, Structural Design, and PRS Specification
  • Completed Dec 2005

Slide 17

Superpave 2005

Superpave will be a fully integrated
asphalt mix design and construction
system that:

(4) will be clearly understood by public
and private sector engineers, technicians,
and contractors through initial and
continuing training and outreach programs.


Slide 18

Superpave 2005

Goal 4 - Communication & Training

  • Expert Task Group
    • Develop a communications message
    • Develop training needs
      • 2003 National Conference
    • Attack funding shortfall

Slide 19

Superpave 2005

Technical Issues

  • SPT and Volumetrics
  • 2002 and Mix Design/PRS Sensitivity Issues
  • Research >>Provisionals > > Standards
  • Advanced Modeling Continuation
  • Software Integration
    • 2002 Guide, Mix Design Analysis, PRS
  • Parking Lot - Future HMA (Superpave) R&D

Slide 20

Superpave 2005

Managerial Issues

  • Sustaining Momentum
  • Reports to AASHTO and FHWA
  • Integrating Mix & Structural Design with
    Construction Contracts
  • AASHTO SOM & ETGs - 10 Years and ??
  • Training the Workforce
PowerPoint files can be viewed with the PowerPoint Viewer
 
Updated: 04/07/2011
 

FHWA
United States Department of Transportation - Federal Highway Administration