Preparation of the Implementation Plan of AASHTO Mechanistic-Empirical Pavement Design Guide (M-EPDG) in Connecticut: Phase II – Expanded Sensitivity Analysis and Validation with Pavement Management Data

The study re-evaluates distress prediction models using the Mechanistic-Empirical Pavement Design Guide (M-EPDG) and expands the sensitivity analysis to a wide range of pavement structures and soils. In addition, an extensive validation analysis of the accuracy of the M-EPDG model predictions was conducted using Connecticut Department of Transportation's (CTDOT’s) Pavement Management Information System (PMIS) data. The major findings indicate: (1) Overall, the Pavement-ME software has capability of running multiple simulation projects simultaneously, thus accelerating sensitivity analyses. (2) The PMIS in Connecticut was found to report overestimated extent of linear cracking, most likely, due to built-in settings of the processing algorithms. (3) The statistical analysis of predicted and reported distress values indicated poor accuracy of Pavement-ME predictions regarding fatigue and thermal cracking in Connecticut. On the other hand, longitudinal cracking, International Roughness Index (IRI), and rutting predictions were found correlated with PMIS-reported values. (4) This study confirmed that an increase in the level of detail for asphalt material properties could lead to an increase in accuracy for longitudinal cracking prediction.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 146p

Subject/Index Terms

Filing Info

  • Accession Number: 01630117
  • Record Type: Publication
  • Report/Paper Numbers: CT-2293-F-17-1, CAPLAB 01-2017
  • Contract Numbers: SPR-2293
  • Files: NTL, TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Feb 22 2017 3:41PM