SECTION 561: ELASTOMERIC COMPRESSION JOINT SEALS
561.1 Description
This Work consists of providing and placing elastomeric compres sion joint seals for Bridge decks.
561.2 Materials
561.2.1 General
The Contractor shall provide joint seals that prevent debris an d water intrusion through the joint system. The Contractor shall provide preformed open cell seals, manufactured with elastomeric polychloroprene Materi al in accordance with ASTM D2 628. The Contractor shall mark the top surface of joint seals.
561.2.2 Dimensional Tolerance
The Contractor shall provide seals in accordance with the Contr act and manufacturer’s tolerances.
561.2.3 Splicing
The Contractor shall provide s eals in one (1) continuous strip for each joint.
561.2.4 Lubricant Adhesive
The Contractor shall provide l ubricant adhesives in accordance with the manufacturer's recommendations.
561.3 Construction Requirements
561.3.1 Preparing Joint Recesses
The Contractor shall install jo int seals in prefabricated steel recesses or in recesses saw cut in the concrete. For saw cut recesses, the Contractor shal l cut the joints narrower than required for the preformed seal Material. Before installing co mpression seals, the Contractor shall saw cut a groove to recei ve the seal Material along the t op of the joint. The Contractor shall simultaneously cut both sides of a groove. The Contractor shall control alignment with a rigid guide. The Department will spec ify the groove width based on the temperature and age of the concrete. The Contractor shall bevel saw cut lips to prevent subsequent spalling. The Contractor shall repair spalls, crack s, and protrusions in the joint surface before installing seals. The Contractor shall set prefabricated steel recesses before pl acing the deck slab. The Contractor shall ensure joint surfaces are free of paint, o il, scale, rust, and dust before applying the lubricant adhesive.
561.3.1 1 Oversized Joint Openings
The Contractor may use larger seals for oversized joint opening s, at no additional cost to the Department. Section 561: Elastomeric Compression Joint Seals Page 571 561.3.2 Installation The Contractor shall apply the lubricant adhesive to both joint faces before installing the seal. The Contractor shall compress the seal to the thickness required in the Contract, or as specified by the Project Manager for the rated opening and temp erature conditions. The Department will not allow loose fits or open points between the seal and the deck concrete or metal armoring.
561.3.3 Replacing Joint Seals in Existing Decks
If replacing seals in existing Bridge de cks, the Contractor sha ll completely remove the old seals and clean the side surfaces of the openings of all dirt, rust, and any other Deleterious Material. If required, the Contractor shall modify existing jo int components or deck slab openings before installing the replacement seals.
561.3.4 Acceptance
After installation, the Contractor shall test joint seals for l eakage by water flooding the joint. The Contractor shall perform testing in the presence of the Project Manager. The Contractor shall ensure the top edges of the seal are in contin uous contact with the sides of the joint opening over the entire range of joint movement, or t he Department may reject the seal.
561.4 Method of Measurement
Elastomeric compression joint seal replacement will be measure d by the linear foot.
561.5 Basis of Payment
Pay Item Pay Unit Elastomeric Compression Joint Seal Linear Foot
561.5.1 Work Included In Payment
The following Work and items will be considered as included in the payment for Elastomeric compression joint seals and will not be measured or paid for separately: 1. Leak Testing including water for leak test. Section 562: Bridge Joint Strip Seals Page 572