This paper investigates the integration of locally calibrated hot-mix asphalt (HMA) and unbound granular material characterization models into the Mechanistic-Empirical Pavement Design Guide (MEPDG) to improve the design of flexible pavements. The MEPDG method, currently known as Pavement ME, recommends using locally calibrated material characterization models based on laboratory testing of local materials under specific environmental and traffic loading conditions. A case study using locally calibrated HMA, base, and subgrade material characterization models in Manitoba were compared to designs using default material values in Pavement ME. The impact of the integrated locally calibrated material models on the predicted pavement distresses for pavement sections with different traffic loadings and subgrade types were compared and presented. The results show that the locally calibrated materials model inputs produce lower pavement structural thicknesses compared to the default materials inputs. The effect of using calibrated inputs was more pronounced for higher traffic loadings. The results of the study demonstrate the importance of developing locally calibrated material models as a means of improving flexible pavement designs.
Integrating Locally-Calibrated Material Characterization Models for Design of Flexible Pavements: A Case Study
International Conference on Transportation and Development 2018 ; 2018 ; Pittsburgh, Pennsylvania
2018-07-12
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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