Advanced Statewide Calibration of MEPDG for NMDOT

Details

• Creators:
  Tarefder, Rafiqul A. ; Hasan, Md Mehedi
• Corporate Creators:
  University of New Mexico, Albuquerque. Department of Civil Engineering
• Corporate Contributors:
  New Mexico. Department of Transportation. Research Bureau ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Calibration Dynamic Modulus Of Elasticity Fatigue Cracking Fatigue Limit Modulus Of Resilience Paving Materials Rheological Properties Rutting
• Publication/ Report Number:
  NM13MSC-02
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  April 6, 2013 – May 6, 2017
• Corporate Publisher:
  New Mexico. Department of Transportation
• Abstract:
  The recently developed Mechanistic Empirical Pavement Design Guide (MEPDG), which is an improved and advanced methodology for the design of pavement structures, has enhanced the necessity to precisely characterize the pavement materials. A competent structural design of a pavement using MEPDG Level 1 analysis requires materials input parameters to be obtained from the laboratory test results. Currently, New Mexico Department of Transportation (NMDOT) is in the process of calibrating and implementing MEPDG. In this study, as a part of this effort, pavement materials such as subgrade, base, asphalt concrete, binder, aggregate, etc. were collected from seven selected pavement reconstruction sites in the state of New Mexico. Laboratory dynamic modulus, Fatigue Endurance Limit (FEL), dynamic shear rheometer, and resilient modulus tests were conducted on the collected materials. A database containing all materials properties obtained from the laboratory tests has been generated and can be directly incorporated into the MEPDG. Therefore, it will provide the pavement engineer and designer with valuable information for MEPDG analysis for all design levels. Several field tests, which are additional to the originally proposed work, were also conducted and reported in this study. Additionally, all seven pavement sections were modeled and analyzed using the MEPDG for design Level 1, 2 and 3. Predicted distress quantities for fatigue cracking and rutting were compared among the three levels. The analysis results demonstrated that greater fatigue cracking and rutting in the Asphalt Concrete (AC) layer occurred in Level 2 and 3 compared to Level 1. The dynamic modulus of AC layer is under predicted at Level 2 and Level 3 resulting in higher rutting and fatigue cracking.
• Format:
  PDF
• Funding:
  456-391
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8f7cc45ff998062d09b4f0e86771aee653f267b7f9abddafa6adbbebb7d7ee498f8cb3eeacd962bf9a720010dbd8c9370dbf3290f1e9eaebb704cf79e025272c
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/87109/dot_87109_DS1.pdf
• File Type:
  [PDF - 3.08 MB ]