The pavement repair project at Cherry Point Marine Air Station was to an expansion joint that joined concrete to asphalt. The location was at the intersection of an asphalt taxiway and a concrete runway pad. The purpose was to fill a joint void too large for conventional rubber sealants and allow for expansion and contraction.
A saw-cut 4 in. deep was run along the entire length of the asphalt to provide a uniform interface. The concrete side was saw-cut 4 in. deep to clear all spalling along the edge. The average width of the repair area was 4 in. wide with some areas wider to accommodate additional spalling. Air hammers were used to chip out pavement in the cutouts and air blown to remove debris from the entire joint area to a depth of about 12 in. The 4-in.-deep reservoir created by the cutout was then sandblasted clean, blown out with air and a surface conditioner applied. Deery American’s Level & Go Low Vis. was applied entirely with a mastic buggy. The material temperature was 370°F when applied to within 1 in. of the surface and after just a few minutes to cool was topped to surface level. The only hand work necessary was to use a flat shovel and remove a few high spots. There did not appear to be much if any concave shape to the surface after overnight cooling.