UPN: 9401 Project Number: STPS 218-1(12)0 Project Name: Conrad – East
The selected experimental feature, Crafco Mastic One, is designed for large cracks and distressed surface areas too small for re-paving, but too large for standard crack sealing. It is a hot-applied, pourable, self-adhesive ridged asphalt binder containing selected aggregate to ensure load bearing and skid resistant characteristics. It does not require compactions to achieve 100% density. Per the manufacturer’s information, it is flexible and can withstand weather, traffic, and thermal movement. The manufacturer also states, it is waterproof, provides an air-tight seal, and it resists cracking, delamination, and spalling, with a reported service life greater than 10 years. Following the application of the Mastic One, the roadway will have a chip seal application.
The following is information on the differences between Mastic One use and that of conventional crack seal projects, per a representative from Crafco. Mastic One is designed for repairing larger surface issues, with conventional crack sealing being used to fill smaller cracks. The contractor on site also recommended that for cracks deeper than 3 inches multiple lifts less than 2.5 inches thick should be used. The Mastic One material bonds equally well to Portland Cement Concrete Pavement (PCCP).
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