MAE provided geotechnical engineering services to explore possible cause(s) of settlement of a section of UNF Drive, and pavement coring to measure the thickness of the asphalt surface course for estimation of milling and resurfacing costs. During construction, MAE provided inspection and testing services to observe and document the asphalt milling and paving operations on Alumni Drive and for the UNF Drive repair.
During construction, MAE’s responsibilities included observation and documentation of the milling and resurfacing along Alumni Drive to insure conformance with plans, including:
- Thickness measurement of the milled sections
- Roadway cross-slope measurements after milling and paving
- Asphalt spread rate measurement
- Asphalt temperature
- Coring of the new asphalt for thickness and extraction/gradation testing
- Striping and installation of traffic loops monitoring
After completion of each day’s paving operation, the pavement was cored to measure the thickness and density of the new asphalt layer. The cores were also tested for asphalt content and aggregate gradation to determine that the new pavement was in conformance with the Job Mix Formula and within FDOT tolerances.
The UNF Drive repair consisted of excavating the existing pavement section and subgrade materials to a depth of about 3 feet, and backfilling with excavatable flowable fill to a depth of 6 inches below the adjacent pavement surface. Flowable fill was chosen as it allowed for quick repair with minimal disruption of campus traffic activities. After about 4 hours of curing time, the repair was completed by placing multiple layers of asphaltic concrete.