2543.01 GENERAL.
Transverse Joint Repair consists of milling unstable material from transverse joints of existing HMA pavements as directed by the Engineer, cleaning the opening in the existing pavement, filling the milled trench with the specified mixture, and sealing the edges of the repair when required.

2543.02 MATERIAL.
The material to be used for the transverse joint repair shall be HMA meeting the requirements of Section 2203 or Section 2303. The mixture shall be 300,000 ESAL HMA or better.

The mixture size may be 3/4 inch, 1/2 inch, or 3/8 inch (19 mm, 12.5 mm, or 9.5 mm).

Tack coat bitumen shall be as specified in Article 2303.02, E.

2543.03 EQUIPMENT.
The Contractor shall furnish milling equipment capable of removing deteriorated material a minimum of 12 inches (0.3 m) in width in one pass and to the depth specified in the contract documents.

Equipment for removing other deteriorated material and for cleaning of the joint in the existing pavement shall be tools or hand tools approved by the Engineer.

Equipment for compacting the lower lifts shall be mechanical tampers meeting requirements of Article 2001.04, trench rollers, vibratory compactors, or weighted vehicle wheels operated in the trench.

2543.04 CONSTRUCTION.
The Contractor shall mill a transverse area not less than 12 inches (0.3 m) wide or more than 24 inches (0.6 m) wide for the entire pavement width at joint repair areas. Additional width may be specified by the contract documents or by the Engineer. The maximum depth of the milled area will also be specified in the contract documents. The Contractor shall remove all loose material and clean the joint by methods approved by the Engineer. The use of hand tools may be required to provide a nearly vertical face of sound material. All removed material shall become the property of the Contractor, unless otherwise specified in the contract documents.

Prior to filling the milled area with HMA, the Contractor shall lightly tack the vertical faces and the base of the area. These surfaces shall be clean and dry to make the tacking operation effective.

The Contractor shall place material for filling the milled area in uniform lifts not to exceed 3 inches (75 mm) in depth. Compaction shall be accomplished by a minimum of three passes with the compaction equipment specified. The finish elevation of the compacted material in the milled area shall be level with, or not more than 1/4 inch (5 mm) above, the surrounding pavement surface.

If the transverse joint repair is to be used for the roadway wearing surface, the Contractor shall seal the edges of transverse joint repair with a coat of CRS-2 Bitumen. The Contractor shall apply the bitumen material with a V-shaped squeegee tool at a width of 3 inches (75 mm) centered on the joint edge. The Contractor shall blot excess bitumen material with sand.

2543.05 LIMITATIONS OF OPERATIONS.
The work shall be conducted on one lane at a time unless the road is closed to traffic. If the road is not closed, the Contractor shall conduct all operations to provide a minimum of inconvenience to traffic.

The Contractor shall adjust the work schedule so that all the milling, cleaning, filling and compacting, and sealing of each transverse joint repair will be completed in 1 day if the road is not closed to traffic. If unforeseen conditions should result in milled trench sections being left overnight, a sufficient number of flaggers shall be assigned to warn and direct traffic, from the time construction operations have stopped until they have resumed again. No extra payment will be made for the necessary flaggers.

Articles 1107.08, 1107.09, and 1108.03 shall also apply.

2543.06 METHOD OF MEASUREMENT.
The Engineer will determine the number of tons (megagrams) of material placed for Transverse Joint Repair. The Engineer will deduct unused quantities based on actual scaled weight (mass) or estimates.

2543.07 BASIS OF PAYMENT.
For the tons of specified material used for Transverse Joint Repair, the Contractor will be paid the contract unit price per ton (megagram). This payment shall be full compensation for removal of all deteriorated material from the joint, cleaning, tack coat, asphalt binder, HMA material and filling and compacting the trench with the HMA material, and sealing the transverse joint repair edges, when required.