1. NCHRP Project Update: A Calibrated and Validated National Performance-Related Specification for Emulsified Asphalt Binder
Greg Harder
AASHTO TSP•2 – Emulsion Task Force (ETF) Meeting
Heritage Research Group – The Center
Indianapolis, IN
June 12-13, 2019

2. Project Objectives
Develop a national performance-related material specification for emulsified asphalt binder for use with chip seals and microsurfacing/slurry seals that:
is similar in concept and format to AASHTO Standard Specifications M320 and M332;
is calibrated and validated with performance data from field test sections;
uses readily available testing equipment (i.e., Superpave test equipment); and
reflects varying climatic and traffic conditions.

3. ETF Draft Specification will be used as the starting point
Project Objectives
Develop a national performance-related material specification for emulsified asphalt binder for use with chip seals and microsurfacing/slurry seals that:
is similar in concept and format to AASHTO Standard Specifications M320 and M332;
is calibrated and validated with performance data from field test sections;
uses readily available testing equipment (i.e., Superpave test equipment); and
reflects varying climatic and traffic conditions.
ETF Draft Specification will be used as the starting point

4. ETF Draft Specification

5. ETF Draft Specification

6. NCHRP Research Team

7. NCHRP 09-63 Activities Project started May 1, 2019
Expected completion by May 1, 2023
Phase 1
Approximately 6 months
Phase 2
Subject to approval by Project Panel
Remaining 42 months

8. NCHRP 09-63 Activities Phase 1 Deliverables Conduct Literature Review
Propose Preliminary Specification
Provide Detailed Experimental Plan for Phase 2
Provide Interim Report

9. NCHRP 09-63 Activities Phase 2 Conduct Experimental Plan
Propose Final Specification
Communicate Findings through Presentations
Provide Final Report

10. 2019 Timeline

11. NCHRP 09-63 Activities Project Status Literature Review underway
Amplified Work Plan submitted
Reviewing ETF Testing Program data
Kick-off conference call meeting with Panel scheduled

12. NCHRP 09-63 Questions or Comments?
Reach out to any of the research team members!
Mike Anderson
office
cell

13. Thanks!