564Preformed Closed Cell Foam Bridge Joint Seals

564.1 Description

This Work consists of providi ng and installing preformed close d cell foam bridge joint seal systems in accordance with the manufacture’s recommendations an d as approved by the Project Manager.

564.2 Materials

564.2.1 General

The Contractor shall select sealing material and the nosing ele ment from the Department’s Approved Products Lis t for Preformed Closed Cell F oam Bridge Joints. The Contractor shall provide sea ling, bonding and nosing elements f rom the same manufacturer.

564.2.2 Closed Cell Foam Joint Seal

The Contractor shall use a joint seal that: 1. is an impermeable, closed-cell , cross-linked, ethylene vinyl acetate, low density polyethylene copolymer, nitrogen blown foam material, 2. has a minimum working range of 60% compression and 30% tensi on, 3. meets or exceeds the requirements listed in Table 564.2.2:1 below, 4. has 1/8 inch deep by 1/8 inch wide grooves spaced at ¼ inch to ½ inch along both sides of the joint and running the entire length of the joint t o increase bond surface area, 5. is resistant to degradation due to ultraviolet radiation, 6. is self-extinguishing, and 7. is resistant to abrasion, oxidation, oils, gasoline, Road sa lts and other petroleum products that may be spilled on the surface. Table 564.2.2:1 Minimum Requirements For Preformed Joint Sealer Property Requirement Service Range -94 – 160 degrees F Tensile Strength (ASTM D-3575, Suffix T) 110 psi min Elongation at break (ASTM D-3575, Suffix T) 200 % average Tear Resistance (ASTM D-624) 15 lb/inch min Water Absorption (ASTM D-3573, Suffix L) 0.035 lb/ft3 max Density (ASTM D-3575) 2.6 – 4.0 psf Weathering (ASTM G-154 or AASHTO T 42) 3000 Hrs No Chalking, Flaking, Blistering, Checking, and Cracking Recovery (ASTM D-545) 97% min Compression / Deflection @25% Deflection of original width(ASTM D- 3575) @ 59% Deflection of original width(ASTM D- 3575) 10 psi 20 psi Section 564: Preformed Closed Cell Foam Bridge Joint Seals Page 581 564.2.3 Bonder The Contractor shall use a bonder that is a two (2) component, 100% solid epoxy adhesive designed to bond joint mate rial to steel, cured concre te or wood, and is approved by the manufacturer.

564.2.4 Elastomeric Concrete

The Contractor shall use an elastomeric concrete that is mixed and applied according to the manufacturer’s published reco mmendations and meets or excee ds the requirements listed in Table 564.2.4:1, “Minimum Requirements for Elastomeric Concr ete,” below. Table 564.2.4:1 Minimum Requirements For Elastomeric Concrete Property Reference Requirement Compressive Strength ASTM D 695 2,600 psi Tensile Strength ASTM D 638 775 psi Elongation at Break 150% Hardness, Shore D ASTM D 2240 59 Water Absorption ASTM D 570 < one percent (1%) Density 9.4 lb/gal Slant Shear Bond Strength Concrete Steel 250 psi min 250 psi min Resilience @ 5% Deflection ASTM D 695 90% min

564.3 Construction Requirements

564.3.1 General

The Contractor shall install the Joint sealant with a width 25 % greater than the width of the joint opening at a near neutral condition (72 degrees F) ac cording to the manufacturer’s recommendations. The Contractor shall use the heat welding met hod for all directional changes in the joint sealant. The Contractor shall allow new c oncrete to cure for seven (7) Days, before installing the sealing material. The Contractor s hall have all joint systems pre- approved by the Project Manager pri or to placement. The Contra ctor shall use a Performance and Installation Enhancement (P.I.E.) bevel cut when the joint opening is greater than three

564.3.2 Technical Representative

The Contractor shall have the manufacturer’s technical represe ntative on site for the initial joint installation to advise the construction personnel and ensure a satisfactory joint installation. If the Contractor can show proof of satisfactory past experience installing at least ten (10) joints or 300 ft of joi nts of same Material, whichever is larger, the Project Manager may waive this requirement.

564.3.3 Manufacturer’s Instructions

The Contractor shall provide a complete set of written joint i nstallation instructions to the Project Manager at least 14 Days before installing the joints.

564.3.4 Surface Preparation

The Contractor shall prepare all surfaces in accordance with the manufacturer’s instructions.

564.3.5 Existing or New Concrete To Concrete Joints

The Contractor shall clean surfaces of joint and remove debris. Sand blasting and/o r mechanical abrasion of substrat e may be required to remove debr is. The Contractor shall place bonder and joint material against new or sound existing c oncrete.

564.3.6 Existing Concrete To Concrete or Concrete To Asphalt Jo ints

The Contractor shall remove unsound concrete or asphalt with a neat saw cut to a minimum size of two (2) inch depth and four (4) inches wide. T he Contractor shall clean surfaces of joint and remove debris. The Contractor shall prim e all surfaces with a primer acceptable to the manufacture and place elastomeric concrete. The Contractor shall place bonder and joint material against new elastomeric nosing after it has cured to 75% of its final strength.

564.3.7 Protection of joints

The Contractor shall provide protection of the join t from construction traffic.

564.4 Method of Measurement

Preformed closed cell foam B ridge joint seals will be measured by the linear foot.

564.5 Basis of Payment

Pay Item Pay Unit Preformed Closed Cell Foam Bridge Joint Seals Linear Foot

564.5.1 Work Included in Payment

The Department will consider as included in the payment for th e pay item(s) listed in this section and will not measure or pay separately for the followin g Work: 1. Preformed closed cell f oam bridge joint seal system; 2. Including material , labor, certifications; 3. All other costs associated wi th providing and installing of the joint systems; and 4. Technical representative unless waived by Project Manager. Section 565: Preformed Silicone-Coated Foam Joint System Page 583