450MANUAL ASPHALT PATCHING

450.1DESCRIPTION—This work is preparing and patching of potholes, abrupt depressions, and deteriorated

edges of pavement, and repatching temporarily patched potholes using asphalt plant mix material placed manually or with mechanical spreading and finishing equipment.

450.2MATERIAL—

• Asphalt Wearing Course. Section 413.2

• Asphalt Binder Course. Section 413.2

450.3CONSTRUCTION—As specified in Section 413.3 and as follows:

depth, perform the work manually with asphalt wearing course as indicated.

each patch has a minimum area of 1 square foot. Excavate outlined area to sound, stable material. The use of a milling or planing machine will be allowed. Cut all edges vertically. After removal of the debris, thoroughly clean the area to be patched and the surrounding pavement of all loose and foreign material. Thoroughly dry all surfaces of the area to be patched. Apply tack coat to the bottom and vertical surfaces of the area to be patched as specified in Section 460.3(b).

wheeled roller or other approved compaction equipment. Ensure that, after compaction, the surface of the patch conforms to the grade of the surrounding pavement. Fill all excavated areas before the close of each workday. Potholes which extend into the shoulder do not require excavation beyond the edge of roadway. If the existing shoulder has an asphalt base, fill the shoulder portion of the pothole with asphalt and compact in the same manner as the roadway. For other shoulder types, fill the pothole with suitable material excavated from the roadway pothole and compact. Seal edges with emulsified asphalt, Class TACK or NTT, the PG-Binder used in the pavement course or PG 64S-22.

depth, perform the work manually with asphalt wearing course and asphalt binder course as indicated.

3 inches in uncompacted depth. After leveling each lift, compact with an approved mechanical tamper. Place asphalt wearing course material in the topmost 1 1/2 inches of the patch. Ensure that, after compaction, the surface of the patch conforms to the grade of the surrounding pavement. Compact the last lift with steel wheeled roller or other approved compaction equipment. Fill all excavated areas before the close of each workday, except that the 1 1/2 inch wearing course may be placed on the following day.

Potholes which extend into the shoulder do not require excavation beyond the edge of roadway. If the existing shoulder has a n asphalt base, fill the shoulder portion of the pothole with asphalt wearing course and compact in the same manner as the roadway. For other shoulder types, fill the pothole with suitable material excavated from the roadway pothole and compact. Seal the edges with emulsified asphalt, TACK or NTT, the PG-Binder used in the pavement course or PG 64S-22.

450.4MEASUREMENT AND PAYMENT—

• Asphalt Wearing Course (Manual Patching). Ton

• Asphalt Binder Course (Manual Patching). Ton