SECTION 562: BRIDGE JOINT STRIP SEALS
562.1 Description
This Work consists of providing, assembling, and installing Bri dge joint strip seal assemblies per the Standard Drawi ngs for Bridge Joint Strip Sea ls.
562.2 Materials
562.2.1 General
The Contractor shall provide Bri dge joint strip seals of elasto meric Material and metal components to allow expansion and contraction of the Bridge Sup erstructure and to seal the deck surface. The Contractor shall anchor Bridge joint strip seal assemblies either directly in PCC with Type A anchorage or in elastomeric concrete headers or end dams with Type B anchorage. Unless noted on the Plans, Type A anchorage should be used.
562.2.2 Elastomer
The Contractor shall provide 100% virgin polychloroprene (neopr ene) elastomeric sealing element in accordance with Table 562.2.2:1, “Elastomer Physical Property Requirements.” Table 562.2.2:1 Elastomer Physical Property Requirements Property ASTM test Requirement Tensile strength, minimum D 412 2,000 psi Elongation at break, minimum D 412 250% Hardness, durometer, neoprene D 2240 60 ± 5 Compression set, maximuma D 395 40% Brittleness @ -40 °F D 746 Not brittle Property deteriorationb D 573 Tensile strength loss, maximum 20% Elongation loss, maximum 20% Hardness point change, Type Ac D 2240 0 to ±15 Ozone resistanced D 1149 No cracks Oil swelle D 471 Weight increase, maximum +45% Resistance to saltf D 471 Variation of volume -5% to +10% aAfter 70 h at 212 °F using Method B, modified. bAfter 70 h at 212 °F. cDurometer A. dAt 20% elongation and 300 pphm in air at 104 °F. eUsing ASTM Oil #3, after 70 h at 212 °F. fAfter 70 h at 104 °F in calcium chloride solution. Section 562: Bridge Joint Strip Seals Page 573 562.2.3 Metal Components The Contractor shall provide st eel retaining bars in accordance with ASTM A 588. The Contractor shall provide anchoring Materials in accordance with AASHTO M 270, (grade 36) for Structural Steel and AASHTO M 31 (grade 40) for reinforcing steel.
562.2.4 Elastomeric Concrete
The Contractor shall provide el astomeric concrete composed of a n elastomeric binder and precision blended aggregates, s pecifically formulated for u se as an energy absorbing header Material for Bridge deck expansion joints. The Contract or shall select Material from the Department’s Approved Products List. The Contractor shall provide a manufacturer’s Materials certification. 562.3 CONSTRUCTION REQUIREMENTS
562.3.1 Working Drawings and Submittals
The Contractor shall submit three (3) sets of complete Working Drawings to the Project Manager for preliminary review; include two (2) copies of the p roduct literature for elastomeric concrete and joint seals, containing complete Materials data an d installation instructions. 21 Days shall be allotted for preliminary review. The Contractor shall include the following information: 1. Detailed dimensions and sizes of component parts of the join t; 2. Details of miscellaneous parts; 3. Field splice details and locations; 4. Material Specifications; 5. Weld symbols; and 6. Welding electrode Specifications. Upon receipt of the reviewed Working Drawings, the Contractor s hall return one (1) set to the manufacturer or Supplier with notations. After making the required corrections, the Contractor shall submit eight (8) sets of final Working Drawing s to the Department. The Contractor shall not perform Work and shall not change the Work ing Drawing before obtaining Department approval. Seven (7) additional Days shall be allott ed for final review. The Contractor shall not perform Work prior to obtaining Department approval. The Contractor shall not modify the approved Working Drawings without Departme nt approval.
562.3.2 Fabrication of Steel Components
The Contractor shall fabricate steel components in accordance w ith Section 541, “Steel Structures.” The Contractor shall stamp manufacturer’s name an d model number at a visible location on each end of the steel extrusion.
562.3.2 1 Protective Coating
Unless otherwise specified in the Contract, the Contractor shal l galvanize the surfaces of steel components in accordance with Section 541.2.6.1, “Galvani zing or Zinc Coating.”
562.3.3 Manufacturer’s Technical Support Representative
The Contractor shall ensure an el astomeric concrete manufacture r’s technical support representative is at the site dur ing initial installation to: Section 562: Bridge Joint Strip Seals Page 574 1. Advise and ensure adherence to the correct installation meth od; 2. Train assigned personnel in the correct methods of installat ion; and 3. Certify to the Project Manager that the Contractor installed the Material in accordance with the manufacturer’s instructions. Both the representative and the Contractor shall sign and date written certifications for the Project Manager. If the Contractor can show proof of satis factory past experience installing at least ten (10) joints or 300 ft of joints using e lastomeric concrete, the Project Manager may waive this requirement.
562.3.4 Temperature and Weather Limitations
The Contractor shall not place elastomeric concrete when the ai r or Material temperatures are below 45 °F. The Contractor shall not place e lastomeric concrete during rain or snow.
562.3.4 1 Placement Temperatures
The Contractor shall preheat the ingredients of the elastomeric concrete in accordance with the manufacturer’s instructions and maintain the preheat t emperatures within the specified tolerances.
562.3.5 Surface Preparation
Immediately before placing the el astomeric concrete, the Contra ctor shall sandblast the surfaces of steel, concrete, a nd asphalt that will contact elas tomeric concrete. The Contractor shall completely remove dirt, rust, grease, oil, and other Dele terious Material. After blasting, the Contractor shall remove loose dirt, sand, and debris by vac uuming or blowing with dry, oil- free compressed air. The Contractor shall ensure surfaces are completely dry before placing the elastomeric concrete.
562.3.5 1 Priming
Before placing elastomeric concrete, the Contractor shall prime the steel, concrete, and asphalt surfaces that will contact elastomeric concrete Materia l in accordance with the elastomeric concrete manuf acturer’s recommendations.
562.3.6 Placement of the Steel Extrusions
The Contractor shall place steel extrusions ¼ inch +/- 1/16 inc h below and parallel to the final deck elevations. The Cont ractor shall remove and replace joints with extrusions that protrude above final deck elevat ions at no additional cost to t he Department. Unless otherwise specified in the Contract, the Contractor shall insta ll block-outs that have at least a 1/2 inch clearance between the steel extrusions and the block-o ut bottoms if using elastomeric headers. The Contractor may field splice steel retaining bars by welding at the crown point of the Roadway and at approximately 20 foot intervals in the remaining length of the seal. The Department will not allow any other field splicing with the exc eption of phase line or traffic control line. Field welding certification will not be required , unless specified in the Contract Documents.
562.3.7 Mixing and Placing of the Elastomeric Concrete
Section 562: Bridge Joint Strip Seals Page 575 The Contractor shall install elastomeric concrete headers in ac cordance with the manufacturer’s instructions. If there is a conflict between th is specification and the manufacturer’s printed instructions, the Contractor shall use t he more stringent requirements. During mixing and placement operat ions, the Contractor shall no t spill or spread elastomeric concrete on deck su rfaces or steel extrusion parts that are not part of header construction. The Contractor shall perform mixing off the Brid ge deck. The Contractor shall use plywood sheets and plastic s heeting to protect the Bridge d eck for longer Bridges where this is not practical. The Contractor shall place forms along the void edges, beneath the steel extrusions. The Contractor shall place and compac t elastomeric concrete the ent ire length of the header to eliminate voids and leakage. The Project Manager may reject the installation if the elastome ric concrete has any of the following characteristics: 1. Contains voids or honeycom bs beneath steel extrusions; 2. Creates a poor finish; 3. Sets before being fully placed and consolidated; 4. Is not properly bonded to the steel and the concrete substra te; or 5. Shows signs of delamination.
562.3.7 1 Placement of Elastomeric Concrete in Vertical Recesse s
At curb, Sidewalk, or barrier joint upturns, the Contractor sha ll follow procedures for placement of the elastomeric conc rete into the vertical recesse s without voids or honeycombs.
562.3.7 2 Heat Vulcanizing
The Contractor shall heat vulcanize the concrete after placemen t, if specified in the manufacturer’s instructions.
562.3.8 Placement of Elastomeric Sealing Element
The Contractor shall provide and install the sealing element in one (1) continuous piece and in accordance with the manufacturer’s instructions. The Co ntractor shall not field splice the sealing element, unless otherwise approved by the Project M anager.
562.3.9 Acceptance
The Contractor shall provide an installed seal that is undamage d and prevents moisture and other contaminants on the deck surface from leaking through the joints. After installation, the Contractor shall test the Bridge joint strip seals for leak s by flooding with water. The Contractor shall perform testing in the presence of the Project Manager.
562.4 Method of Measurement
Bridge joint strip seal will be measured by the linear foot.
562.5 Basis of Payment
Pay Item Pay Unit Bridge Joint Strip Seal Linear Foot
562.5.1 Work Included in Payment
The following Work and items will be considered as included in the payment for Bridge joint strip seals and will not be measured or paid for separate ly: 1. Steel components of the Bridge joint strip seal; 2. Elastomeric concrete headers; 3. Leak Testing including water for leak test; 4. Providing manufacturers’ tec hnical representatives unless wa ived by Project Manager; 5. Elastomeric concrete installation certification; 6. Protective coating of steel components; and 7. Field welding of steel extrusions. Section 563: Polymer Bridge Joint Seals Page 577