Hundreds of Falling Weight Deflectometer (FWD) tests were conducted
to characterize the material properties of the test pad under
accelerated trafficking. Cores were obtained to verify pavement
thickness and to determine material properties in the laboratory.
In addition, FWD tests were performed on an instrumented pavement
section, and pressure cell and MDD data were simultaneously collected.
Structural analysis of the pavement was performed by examining
results from numerous sets of layer moduli. FWD deflections were
used to determine layer moduli through backcalculation. Theoretical
stress and strain were then computed using multi-layered elasticity
based programs. The theoretical stress and strain were then compared
to the measured pressure and strain. Furthermore, pavement life
was computed using distress models suggested by the Asphalt Institute
and then compared with the actual termination life determined
in the field. The findings are presented in the paper.