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Orange County Health Department Improvements Smith Sinnett / 2024008 <br />Hillsborough, NC Orange County Asset Management Services <br />JOINT SEALANTS 07 92 00 - 5 <br />2.5 JOINT FILLERS FOR CONCRETE PAVING <br />A.General: Provide joint fillers of thickness and widths indicated. <br />B.Bituminous and Fiber Joint Filler: Provide resilient and non-extruding type premolded bituminous-impregnated <br />fiberboard units complying with ASTM D 1751; FS HH-F-341, Type I; or AASHTO M 213. <br />1. Where joints are to receive sealant, provide joint fillers with removable plastic top strips. <br />PART 3 - EXECUTION <br />3.1 EXAMINATION <br />A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with requirements for <br />compliance with requirements for joint configuration, installation tolerances and other conditions affecting joint sealer <br />performance. Do not proceed with installation of joint sealants until unsatisfactory conditions have been corrected. <br />3.2 PREPARATION <br />A.Surface Cleaning of Joints: Clean out joints immediately before installing joint sealants to comply with <br />recommendations of joint sealer manufacturers and the following requirements: <br />1. Remove all foreign material from joint substrates which could interfere with adhesion of joint sealer, including <br />dust; paints, except for permanent, protective coatings tested and approved for sealant adhesion and <br />compatibility by sealant manufacturer; old joint sealants; oil; grease; waterproofing; water repellants; water; <br />surface dirt; and frost. <br />2. Clean concrete, masonry, unglazed surfaces of ceramic tile and similar porous joint substrate surfaces, by <br />brushing, grinding, blast cleaning, mechanical abrading, or a combination of these methods to produce a clean, <br />sound substrate capable of developing optimum bond with joint sealants. Remove loose particles remaining <br />from above cleaning operations by vacuuming or blowing out joints with oil-free compressed air. <br />3. Remove laitance and form release agents from concrete. <br />4. Clean metal, glass, porcelain enamel, glazed surfaces of ceramic tile; and other nonporous surfaces by <br />chemical cleaners or other means which are not harmful to substrates or leave residues capable of interfering <br />with adhesion of joint sealants. <br />B.Joint Priming: Prime joint substrates where indicated or where recommended by joint sealer manufacturer based on <br />preconstruction joint sealer-substrate tests or prior experience. Apply primer to comply with joint sealer manufac- <br />turer’s recommendations. Confine primers to areas of joint sealer bond, do not allow spillage or migration onto <br />adjoining surfaces. <br />C.Masking Tape: Use masking tape where required to prevent contact of sealant with adjoining surfaces which <br />otherwise would be permanently stained or damaged by such contact or by cleaning methods required to remove <br />sealant smears. Remove tape immediately after tooling without disturbing joint seal. <br />3.3 INSTALLATION OF JOINT SEALANTS <br />A.General: Comply with joint sealant manufacturer’s printed installation instructions applicable to products and <br />applications indicated, except where more stringent requirements apply. <br />B.Elastomeric Sealant Installation Standard: Comply with recommendations of ASTM C 962 for use of joint sealants <br />as applicable to materials, applications and conditions indicated. <br />C.Installation of Sealant Backings: Install sealant backings to comply with the following requirements: <br />1. Install joint fillers of type indicated to provide support of sealants during application and at position required <br />to produce the cross- sectional shapes and depths of installed sealants relative to joint widths which allow <br />optimum sealant movement capability. <br />Docusign Envelope ID: 186E0FF8-664C-4A5C-9F97-28196CE69FD1