Case Study

Procedure & Observations:
CERATECH personnel arrived at the Atlanta Airport and met with the Maintenance Division at the airport for the purpose of performing a demonstration of Pavemend® materials on the airfield.

During the site survey of the airport, several potential sites were identified by the maintenance crew, however, most of the sites exhibited signs of subgrade failures and/or significant system failure that could not be repaired with the limited amount of material available for the demonstration. Ultimately a demo located on Taxiway “A”, west of A3 was prepared.

The repair site consisted of a mid-slab pop out type failure that measured approximately 1.5 feet x 1.5 feet x 0.25 feet (avg). The repair site was located adjacent to the eastern edge of the center line stripe on the taxiway. The site had been previously saw cut for demolition and repair, easing the preparation needs for this repair. Damaged concrete was removed from the area with an air-assisted hammer and the loose material was removed utilizing a high power vacuum. The entire repair site was sounded with a hammer prior to Pavemend materials being placed in the repair site.

The repair site required two units of Pavemend® to perform the repair. Two units of Pavemend SL™ ( 15.0) were utilized in the repair. Air temps at the time of the repair were in the mid-40’s, water temps were in the low-50’s, and the material temps were in the low-60’s. Additionally, the host material temperature was measured at approximately 50°F. The units of Pavemend SL™ were mixed with one gallon of potable water supplied by the maintenance staff, and were mixed for approximately 10:30 minutes, to 95° F, prior to placement in the repair site. A brush finish was applied to the surface.

Figure 1: Site preparation and repaired site