SECTION 714 - JOINT SEALS
714.01 Elastomer for Seal Elements The preformed elastomeric polychloroprene
joint seal elements, both compression and gland type, shall conform to the requirements of AASHTO M 297.
714.02 Fabric for Seal Elements Fabric used for reinforcement in a seal element
shall be a non-wicking fabric conforming to the requirement of ASTM D 578.
714.03 Lubricant Adhesive The lubricant-adhesive shall be a 1 part, moisture
curing, polyurethane and aromatic hydrocarbon solvent mixture and shall have the following physical properties: Solids content 60-80 percent by weight Service Range 5°F to 120°F minimum Film Strength (ASTM D 412) 1,200 psi minimum Elongation at Break 250 percent minimum Each lot of lubricant-adhesive shall be delivered in sealed co ntainers plainly marked with the manufacturer's name or trademark and the date of manufacture. Maximum shelf life shall not exceed 6 months.
714.04 Sealant The sealant shall be a one part, moisture curing, polyurethane base, non-
sag, elastomeric product, conforming to the requirements of Federal Specification TT-S- 0023OC(2), Type II, Class A or ASTM C920, Type S, Grade NS, Class 25. Each lot of sealant shall be delivered in sealed containers pl ainly marked with the manufacturer's name or trademark and the date of manufacture. Maximum shelf life shall be as recommended by the manufacturer. 7-46
714.05 Compression Seals Compression seals shall be multi-cha nnel extruded
shapes made of material conforming to the requirements of Section 714.01 - Elastomer for Seal Elements, and in a configuration as determined by each particular manufacturer and as shown in the contract documents. The seal shall be marked on the top surface with the manufacturer's name or trademark, the lot number and the size designation at intervals of 5 feet or less. Actual seal dimensions shall not differ from the nominal dimensions by more than 1/16 inch/inch of depth or width, or a maximum of ¼ inch whichever is less. The material used shall be one of the products listed on the M aine Department of Transportation’s Qualified Products List.
714.06 Gland Type Seals Gland type seals shall be single memb rane extruded or
molded shapes, made of material conforming to the requirements of Section 714.01 - Elastomer for Seal Elements and of a configuration as determined by each manufacturer and as shown in the contract documents. The seals shall be marked on the top surface with the manufacturer's name or trademark, the lot number and the size designation at intervals of 5 feet or less. If fabric is used to reinforce the seal, it shall conform to the requirements of The material used shall be one of the products listed on the M aine Department of Transportation’s Qualified Products List.
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