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Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays (2010) / Chapter Skim
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Pages 56-57

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From page 56...
... Both the Design Program and the Calibration Program have the same internal 150 location weather databases that can be called up by the user. The calibration coefficients were developed in this project and used in the Reflection Cracking Overlay Design Model to produce reflection crackling predictions that match the field observations as closely as possible of the more commonly used overlays.
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From page 57...
... The error in the observed field data can be reduced by recording mean values of the observed distress from a sampling survey. The error in the mechanistically predicted numbers of days of crack propagation can be reduced by having more accurate recorded pavement structure and materials properties, traffic, and weather and by improving the cracking-predicting process of the mechanistic model.
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Key Terms

  • reflection cracking
  • field data
  • design program
  • overlay design
  • material properties

  • cracking overlay
  • calibration program
  • mepdg software
  • climatic zones
  • pavement structure

  • mechanistic model
  • overlay performances
  • develop sets
  • calibration effort
  • runs quickly

  • software framework
  • distress growth
  • growth curves
  • identify material
  • extreme designs

  • specific type
  • regression analysis
  • provide estimates
  • growth process
  • program runs

  • mixture modulus
  • sensitivity analysis
  • observed performance
  • service lives
  • speedy trials


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