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Superpave Mixture & Aggregate Expert Task Group 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
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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;
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Slide 3
Superpave 2005
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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)
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Slide 4-5
Superpave 2005
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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
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Slide 6
Superpave 2005
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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;
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Slide 7-8
Superpave 2005
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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
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Slide 9-10
Superpave 2005
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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
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Slide 11-12-13
Superpave 2005
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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
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Slide 14
Superpave 2005
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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.
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Slide 15
Superpave 2005
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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
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Slide 16
Superpave 2005
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Final Superpave Products
- Mix Design Guide
- Mix Design w/Structural Design System
- Mix Design, Structural Design, and PRS Specification
- Completed Dec 2005
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Slide 17
Superpave 2005
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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.
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Slide 18
Superpave 2005
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Goal 4 - Communication & Training
- Expert Task Group
- Develop a communications message
- Develop training needs
- Attack funding shortfall
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Slide 19
Superpave 2005
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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
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Slide 20
Superpave 2005
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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
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