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Pages 19-25

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From page 19...
... 19 C H A P T E R 4 Data for Model Calibration Calibration of the models developed in this study was performed using available field data. However, in those situations where the required data was not available, it was estimated using the relationships developed in this research.
From page 20...
... 20 No. Source Section CSL FWD Test Location Traffic at FWD Test Locations 1 Wen et al.
From page 21...
... 21 material that lies between the CSL and underlying materials (Romanoschi and Metcalf 2001)
From page 22...
... 22 the depth of the HMA layer because of the varying temperature throughout the depth. The modulus of HMA also is affected by oxidation that occurs during pavement life.
From page 23...
... 23 Shrinkage Cracking Different mechanistic models of shrinkage cracking were evaluated but none was deemed appropriate for use in pavement design and analysis (details are provided in Appendix C)
From page 24...
... 24 0 0.5 1 1.5 2 0 0.5 1 1.5 2 Pr ed ic te d M od ul us R at io Measured FWD Modulus Ratio Line of Equality Figure 4-4. Predicted versus backcalculated CSL modulus ratios.
From page 25...
... 25 the model parameters for crack spacing and crack width for stabilized fine and coarse materials, respectively.

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