504PAVEMENT RELIEF JOINT

504.1DESCRIPTION —This work is construction of a pavement relief joint, including sawing, sealing,

subbase material, and necessary excavation.

504.2MATERIAL—

• Class AA Form Paving Cement Concrete. Section 704

• HES Paving Cement Concrete. Section 704. Use only where indicated or directed and is prohibited for use in long-term lane closures except to accommodate local traffic.

• Reinforcement Bars. Section 709.1

• Asphalt Cement, PG 64S-22. Section 702

• Subbase. Section 350.2

• Asphalt Base Course. Section 313.2 and as follows: PG 64S-22, 3 to < 10 million ESALs, or as indicated.

• Asphalt Wearing Course. Section 413.2 and as follows: PG 64S-22, 0.3 to < 3 million ESALs, or as indicated.

• Polyethylene Sheeting. Section 505.2

• Sealing Material. Section 705.4(b), 705.4(c), or 705.4(g)

• Tape Bond Breaker. Section 513.2(c)

504.3CONSTRUCTION—As shown on the Standard Drawings, as specified in Section 501.3, and as follows:

before placing fresh asphalt mixtures. Construct the asphalt base course as specified in Section 313.3.

relief joint and the concrete pavement within ± 1/4 inch. Saw cuts which do not meet this tolerance will be declared defective as specified in Section 105.12. Do not saw cut until the asphalt wearing course has cooled below 140F. Perform saw cutting within 7 days after placing the pavement relief joint. Perform this work on all finished pavement relief joints before discontinuing work due to seasonal paving limitations. Extend the saw-cuts through all existing widening. Saw cut to form a reservoir with dimensions 1 inch deep by 1/2 inch wide. If wet sawing, immediately flush the reservoir with water.

Clean the reservoir immediately before placing sealing material. If using compressed air, use air free of oil, moisture, or any other substance that would prevent bonding of sealing material to the reservoir faces. Do not place sealing material if the air temperature is less than 40F or above 90F, unless otherwise allowed by the Representative. Determine the safe heating temperature and recommended pouring temperature from the manufacturer's shipping container. Heat and maintain the material temperature within these recommended safe temperatures. Place the material as close as possible to the recommended pouring temperature. Do not maintain any single batch of material at the pouring temperature for more than 6 hours. Reheat according to the manufacturer's recommendations. Place tape bond breaker on bottom of joint reservoir immediately before sealing. Do not allow tape to extend up the reservoir face more than 1/8 inch. Fill the reservoir with sealing material to a level 1/8 inch to 1/4 inch bel ow the pavement surface. Do not allow sealing material to spread over the pavement surface.

504.4MEASUREMENT AND PAYMENT—Linear Foot

Measured transversely.