Technical information

1-5
test sections and recorded field and laboratory behavior. Chapter 3 summarizes the APT
work; it includes a description of the loading history and environment prevailing during
the experiment, some preliminary analyses of available the test data and identification
of dataset most suitable for structural investigation. This chapter also presents the
recorded structural behavior for the selected dataset. Thereafter a direct comparison
with the NCAT results is provided to emphasize the need for more intricate and
fundamental analysis.
Tasks 3, 4 and 5 are addressed by Chapters 4 and 5; both contain the
development of mechanistic models for representing the pavement systems considered.
Chapter 4 deals only with isotropic LET while Chapter 5 deals anisotropic LET and
isotropic LVT. In these chapters it is shown how the necessary material properties are
calibrated using the APT experiment. Thereafter, they explain how to apply the models
to other loading and environmental conditions that were not included in the calibration.
Finally, selected responses at NCAT are predicted using the models and compared with
field measurements for validation purposes. The final chapter, Chapter 6, includes a
short summary of the entire report outlining the main findings. It also provides some
general recommendations and implementation suggestions for INDOT.