Calibration and Implementation of the AASHTO Mechanistic‐Empirical Pavement Design Guide in Arizona
This report documents efforts of the Arizona Department of Transportation (ADOT) to implement the America Association of State Highway and Transportation Officials (AASHTO) DARWin‐ME pavement design guide in Arizona. The research team also prepared a practical stand‐alone user’s guide that provides guidance for obtaining inputs, conducting design, and establishing the recommended pavement design. Implementation focused on identifying the desired pavement design application of flexible hot‐mix asphalt (HMA) pavements, composite pavements (thin asphalt rubber friction course over jointed plain concrete pavement [JPCP] and continuously reinforced concrete pavement [CRCP]), JPCP, and HMA overlays of flexible pavement; characterizing materials and subgrades; determining traffic loadings (conducted under Darter et al. 2010); collecting and assembling DARWin‐ME input data from 180 Long Term Pavement Performance and pavement management system sections of flexible, rigid, composite, and rehabilitated pavements; calibrating the DARWin‐ME distress and International Roughness Index (IRI) prediction models to Arizona conditions; and training ADOT staff. Several biased distress and IRI models were corrected through the local calibration of Arizona pavements. Several key inputs were more accurately defined and Arizona defaults provided (e.g., subgrade resilient modulus). The calibration process improved these models through verification, validation, and calibration with Arizona data. Overall, the inputs and calibrated models will provide more accurate, reliable, and cost‐effective pavement designs than designs created with global calibrations.
- Record URL:
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Corporate Authors:
Applied Research Associates, Incorporated
100 Trade Center Drive, Suite 200
Champaign, IL United States 61820Arizona Department of Transportation
206 South 17th Avenue
Phoenix, AZ United States 85007Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Darter, Michael I
- Titus-Glover, Leslie
- Von Quintus, Harold
- Bhattacharya, Biplab B
- Mallela, Jagannath
- Publication Date: 2014-9
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Appendices; Figures; Maps; References; Tables;
- Pagination: 216p
Subject/Index Terms
- TRT Terms: Bituminous overlays; Calibration; Composite pavements; Flexible pavements; Mathematical models; Mechanistic-empirical pavement design; Modulus of resilience; Rigid pavements; Validation
- Identifier Terms: International Roughness Index; Long-Term Pavement Performance Program; Mechanistic-Empirical Pavement Design Guide
- Geographic Terms: Arizona
- Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 01537876
- Record Type: Publication
- Report/Paper Numbers: FHWA‐AZ‐14‐606
- Contract Numbers: SPR 000‐1(169) 606
- Files: TRIS, ATRI, USDOT, STATEDOT
- Created Date: Sep 22 2014 2:10PM