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Superpave Mix/Aggregate ETG “Superpave 2005” August 2001 Status Report

Superpave Mix/Aggregate ETG “Superpave 2005” August 2001 Status Report. Superpave 2005. Superpave will be a fully integrated asphalt mix design and construction system that:

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Superpave Mix/Aggregate ETG “Superpave 2005” August 2001 Status Report

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  1. Superpave Mix/Aggregate ETG“Superpave 2005”August 2001 Status Report

  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;

  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 2004

  4. 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 Superpave 2005

  5. Goal 1 – Mix Design (cont) Additional topics Synthesis on Aggregate Optimization (Blending) 4.75 mm Superpave Mix? Low Traffic Guidelines? Complete by Dec 2004 Superpave 2005

  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;

  7. Superpave 2005 Goal 2 – Moisture Sensitivity • Key Ongoing Work • WRI Research • 9-34 ECS and SPT • No additional projects proposed

  8. Superpave 2005 Goal 2 – Moisture Sensitivity (cont) • Work complete (?) by Dec 2004 • Residual Issues • Field detection and identification • Research framework reconstructed

  9. 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

  10. Superpave 2005 Goal 2 – Simple Performance Tester (cont) • Competed by Dec 2004 • Residual Issue • Acceptance of test and its results • Revisit volumetric and gradation issues in light of simple performance testing

  11. 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

  12. Superpave 2005 Goal 2 – Performance Model Validation (cont) • Proposed Additional Projects • Laboratory Testing Validation Program • Final ICM Integrated into Mix Analysis • Completed July 2005

  13. Superpave 2005 Goal 2 – Performance Model Validation (cont) • Residual Issues • Local knowledge and local adaptation • Local performance data collection and interpretation

  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.

  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

  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

  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.

  18. Superpave 2005 Goal 4 – Communication & Training • Expert Task Group • Develop a communications message • Develop training needs • - 2003 National Conference • Attack funding shortfall

  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

  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

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