AASHTO mechanistic-empirical pavement design guide parametric study.

Details

• Creators:
  Li, Ruipeng ; Cramer, Steven
• Corporate Creators:
  National Center for Freight and Infrastructure Research and Education (U.S.)
• Corporate Contributors:
  United States. Dept. of Transportation. Research and Innovative Technology Administration
• Subject/TRT Terms:
  Concrete Pavements Thermal Expansion
• Publication/ Report Number:
  CFIRE 03-24
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  National Center for Freight and Infrastructure Research and Education (U.S.)
• Abstract:
  This study focuses on assessing the robustness of the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG v 1.1) for rigid pavement
  
  design projects in Wisconsin. The primary tasks conducted in this study included performing sensitivity analysis on MEPDG’s inputs for jointed
  
  plain concrete pavement (JPCP) design, evaluating the practicality of each input parameter’s sensitivity, determining the effects of using different
  
  concrete materials and different hierarchical levels of inputs on predicted JPCP performances, and identifying the limitations of the current MEPDG.
  
  It was found that the coefficient of thermal expansion and modulus of rupture had a strong impact on MEPDG predictions and these outcomes
  
  appeared consistent with conventional wisdom. The adverse effects of the concrete unit weight and the positive benefits of the widened concrete slab
  
  were suspected to have been overestimated by the MEPDG. It was verified that MEPDG predictions were significantly different depending on the
  
  concrete materials and hierarchical levels of inputs chosen. Therefore, the pavement designer was recommended to select the proper design strategy.
  
  The limitations of MEPDG were illustrated in that it did not account for the effects brought by the supplementary cementitious materials on the
  
  pavement design and it erroneously restrained the permissible range for concrete modulus of rupture input. Although a significant number of material
  
  inputs are possible with level 1 implementation of the MEPDG, these inputs are often used in a narrow context and are largely independent from other
  
  inputs and material properties. It cannot be presumed that the change in one input will lead to a full set of parametric changes that such a change
  
  would actually induce in practice.
  
  
• Format:
  PDF
• Funding:
  DTRT06-G-0020
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha-512:fd12afa1e72ffca0961cbe6e9b07e7bfa88505d8706672a68cd541c835366323b256be9b62975bd4d19a171e268592d1e7fd8d9cd282692eccc76edf860d51c4
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25358/dot_25358_DS1.pdf
• File Type:
  [PDF - 779.85 KB ]