Specifications include, but are not limited to: Clean the surface thoroughly to remove all foreign debris (dirt, gravel, silt, etc.) using air blowers or by flushing with water. Embedded dirt and silt shall be removed with steel bristle hand brooms. Any grass shall be removed from all cracks and edges. Treat all grease and oil spots by scraping off the excess oil and dirt away with a wire bristle and coat with an oil spot primer. Install cold patch material to minor potholes. Seal cracks with crack sealant: The sealant should be applied at a minimum surface and air temperature of 50 deg F. -Routing - If applicable. a. Cracks are routed to a minimum width of 3/8 in. and a minimum depth of 1/2 in. -Cracks or joints should be cleaned to be free from all foreign debris using mechanical wire brushes. -To ensure dryness of the crack and to guarantee adhesion of the sealant to the crack wall, a heat lance using 3000 F compressed air will be used. -Install backer rod when necessary to ensure seal. -Install crack sealant using pour pots or speed banders whichever is appropriate. -Apply sand to surface of crack sealant in high traffic conditions so that no tracking will occur.
