Mechanistic-Empirical Pavement Design Guide (MEPDG) National Implementation Efforts

MEPDG National Implementation Efforts South East Pavement Preservation May 12, 2009 Design Guide Implementation Team MEPDG from Research to Reality “The MEPDG is an analysis tool, not a pavement design program.” – Various Unnamed Sources Design Guide Implementation Team Does SHA Use or Plan to Use MEPDG? N0 -12 YES - 40 Alaska 2007 Survey Hawaii Design Guide Implementation Team Timeframe for Implementation Using Alaska 2007 Survey Hawaii Design Guide Implementation Team Training PMS and Local Calibration Traffic Data Files Engineering Judgment And Policy decisions Design Guide Implementation Team Arkansas Software Capabilities Import Raw Data Traffic Data Check Interpolate Climate and Traffic Data Retrieve Material Data • Dynamic Modulus • CTE • Mr Design Guide Implementation 6Team Software Capabilities-Import Raw Data Climate: icm files Traffic: AHTD Traffic Monitoring Data Design Guide Implementation 7Team Software Capabilities-Traffic Data Check Design Guide Implementation 8Team Software Capabilities-Materials E* Design Guide Implementation 9Team Software Capabilities-Materials CTE Design Guide Implementation10Team Continual Improvement • Continued MEPDG Validation Design Guide Implementation Team 11/9/2006 12/9/2006 1/8/2007 2/7/2007 3/9/2007 4/8/2007 5/8/2007 6/7/2007 7/7/2007 8/6/2007 9/5/2007 10/5/2007 11/4/2007 12/4/2007 1/3/2008 2/2/2008 3/3/2008 4/2/2008 5/2/2008 6/1/2008 7/1/2008 7/31/2008 Rut Depth, mm Date 8.E+06 7.E+06 6.E+06 5.E+06 4.E+06 3.E+06 2.E+06 1.E+06 0.E+00 S11– As Built – Rut Depths ESALs at Auburn University 14.0 12.0 10.0 8.0 6.0 S11 MEPDG 4.0 2.0 0.0 Design Guide Implementation Team Date 3/28/2009 40 12/18/2008 Measured 9/9/2008 30 6/1/2008 MEPDG 2/22/2008 35 11/14/2007 8/6/2007 4/28/2007 1/18/2007 10/10/2006 Bottom-Up Fatigue Cracking, % of Lane S11– As Built – Fatigue Cracking at Auburn University 25 20 15 10 Design Guide Implementation Team Continued Validation at Auburn University Design Guide Implementation Team What about Polymers? Design Guide Implementation Team Looking at Strains Directly at Auburn University Strain Response Design Guide Implementation Team 100% at Auburn University 90% 80% Percentile 70% Average +15 -15 N3 2003 N4 2003 N3 2006 N4 2006 60% 50% 40% Darwin-ME output 30% 20% 10% 0% 0.0 100.0 200.0 300.0 400.0 500.0 Microstrain Design Guide Implementation Team Training Opportunities NHI #131064 – Introduction to Mechanistic Design NHI #131109 - Using Mechanistic-Empirical Pavement Design Guide Software NHI #132040 – Geotechnical Aspects of Pavements NHI #151018 – Application of Traffic Monitoring Guide Design Guide Implementation Team Training / Collaboration Opportunities FHWA Regional WIM/Traffic Workshop at NCDOT FHWA Resource Center on request training 2009 DGIT Webinars MEPDG Regional Meetings Design Guide Implementation Team Previous & On-Going Studies NCHRP 9-30 – Experimental Plan for Calibration & Validation of HMA Performance Models for Mix & Structural Design NCHRP 9-30(001) – Conduct Pre-Implementation Studies & Database Enhancement NCHRP 1-40D – A review of the M-E PDG software & prediction methodology; & Correcting errors/blunders in the software NCHRP 1-40B – Local Calibration for the Recommended Guide for M-E Design of New and Rehabilitated Pavement Structures Design Guide Implementation Team Previous & On-Going Studies NCHRP 1-41 – Models for Predicting Reflection Cracking of HMA Overlays (2008) NCHRP 1-42A – Models for Predicting Top-Down Cracking of HMA Layers (2008) NCHRP 9-29 – Simple Performance Tester for Superpave Mix Design (2008) NCHRP 9-38 – Endurance Limit of HMA Mixtures to Prevent Fatigue Cracking (2008) NCHRP 9-44 – Develop Plan for Validating an Endurance Limit for HMA (2008) NCHRP 9-44A – Validating an Endurance Limit for HMA Design Guide Implementation Team Previous & On-Going Studies SHRP Project R-21 – Composite Pavement Systems NCHRP 1-46 – Development of AASHTO Pavement Handbook (2008) NCHRP 1-47 – Sensitivity Analysis of MEPDG (2011) NCHRP 4-36 – Characterization of Cementitiously Stabilized Layers for Use in Pavement Design and Analysis (not awarded) Design Guide Implementation Team Previous & On-Going Studies Calibration Documents: • NCHRP Digest 284, December 2003; Refining the Calibration & Validation of HMA Performance Models: An Experimental Plan and Database • NCHRP Digest 283, December 2003; Jackknife Testing – An Experimental Approach to Refine Model Calibration and Validation FHWA: Use of PMS data for local calibration FHWA: Use of deflection basin data in the MEPDG Design Guide Implementation Team Perspective •1960 – Completion of Road Test Exper iment •1961-62 AASHO Inter im Guide of Rigid and Flexible Pavements •1972 AASHTO Inter im Guide for the Design of Pavements •1981 Revised Chapter III on PCC Pavement Design •1986 Guide for the Design of Pavement Str uctures •1993 Revised Over lay Design Procedures •1998 Supplement to Concrete Design Procedures Design Guide Implementation Team $4,317 Design Guide Implementation Team ... Capabilities-Traffic Data Check Design Guide Implementation 8Team Software Capabilities-Materials E* Design Guide Implementation 9Team Software Capabilities-Materials CTE Design Guide Implementation1 0Team... Retrieving Data Design Guide Implementation1 1Team Software Capabilities-Geo-Mapping Utility Design Guide Implementation1 2Team Software Capabilities-Generated Files Design Guide Implementation1 3Team... Auburn University 25 20 15 10 Design Guide Implementation Team Continued Validation at Auburn University Design Guide Implementation Team What about Polymers? Design Guide Implementation Team Looking