This project was completed in the first nine months of the 2006 NCAT Pavement Test Track cycle.
The 2006 Test Track structural study consists of four sections remaining from the 2003 experiment,one rehabilitated section, and six newly built sections. These sections contain twelve asphalt straingauges at the bottom of the HMA layer. Strain was measured under loading from a falling-weight deflectometer (FWD) and under live traffic to compare gauge precision within and between gauges under different variability constraints using absolute measured differences.