# Presentation: 438709

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

## 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

## 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

## Superpave 2005

- 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

- 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;

## Superpave 2005

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

## Superpave 2005

- Goal 2 – Moisture Sensitivity (cont)
- Work complete (?) by Dec 2004
- Residual Issues
- Field detection and identification
- Research framework reconstructed

## 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

## 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

## 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

## Superpave 2005

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

## Superpave 2005

- Goal 2 – Performance Model Validation (cont)
- Residual Issues
- Local knowledge and local adaptation
- Local performance data collection and interpretation

## 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.

## 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

## Superpave 2005

- Final Superpave Products
- Mix Design Guide
- Mix Design w/Structural Design System
- Mix Design, Structural Design, and PRS Specification
- Completed Dec 2005

## 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.

## Superpave 2005

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

## 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

## 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