Material Characterization Plan & Data

Subgrade Construction

Acceptance of the CC3 subgrade construction was based on four CBR measurements in each wheel track over 300 feet (91.4 m) of constructed subgrade. Each CBR measurement consisted of three penetrations within a circle of approximately 1-foot (0.3 m) radius.

The CC3 subgrade was built up in four equal lifts to the finished grades simultaneously over the full 300 feet (91.4 m). The starting grade of the newly constructed subgrade was also reworked to the target strength, giving five effective newly constructed lifts.

Acceptance CBRs of the final lift of the CC3 subgrade were 3.16 for the north lane and 3.17 for the south lane, each number being the average of four CBR measurements. The range of the measurements was 0.9 in the north lane and 1.3 in the south lane. The measurements were made with one measurement in each of the four test items for each traffic lane.

The following table summarizes the subgrade acceptance test results. The table includes acceptance CBR values with their corresponding moisture content. Additional data including Drive Cylinder Test results can be obtained by accessing the files listed at the end.

The material characterization plan and data is contained in the ZIP file below.

CC3Characterization.zip

HWD Traffic Data

 TrafficData.xlsx