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PART 2: PRODUCTS <br /> 2.01 SEALANT,ACCESSORIES <br /> A. Sealant: Two-part polyurethane, Tremco Dymeric, Pecora Dynatrol H. (Pecora GC-5 Synthacalk) or Sonneborn <br /> "Sonolastic NP2"and SIK.A SIKAFLEX 2-C are acceptable. <br /> Colors: As selected from manufacturer standard colors. <br /> B. Horizontal Joint Sealant: Two-part self-levelling polyurethane, similar to Tremco THC/900, Pecora NR-200 <br /> Urethane or Sonnebom"Sonolastic SL2"and SIKH SIKAFLEX 2-CSL. <br /> C. Expansion Joint Gasket, for joints larger than 3/4": Evazote 50 E.S.P. by E-Poxy Industries, Inc. with <br /> manufacturer's recommended primer and adhesive. <br /> D. Primer- When required,as recommended by the Sealant Manufacturer. <br /> E. Caulking Back-up: Round bars of Ethafoam,Polycel,compatible with sealant. <br /> PART 3: EXECUTION <br /> 3.01 PREPARATION <br /> A. Inspect joints for compliance with requirements for joint configuration, installation tolerance, and other conditions <br /> affecting joint sealant performance. Correct unsatisfactory conditions before proceeding. <br /> B. Clean out joints immediately before installing joint sealants, in accordance with joint sealant manufacturer's <br /> recommendations and the following requirements: <br /> 1. Remove from joint substrates foreign material which could interfere with adhesion of joint sealant, including <br /> paints other than permanent protective coating tested and approved for sealant adhesion and compatibility by <br /> sealant manufacturer,oil,grease,waterproofing,water repellants,water dirt,and frost. <br /> 2. Clean porous joint substrates using approved methods such as brushing, grinding, blast cleaning, mechanical <br /> abrading, and acid washing as appropriate, or a combination of these methods, to produce a clean, sound <br /> substrate capable of developing optimum bond with joint sealants. Remove loose particles remaining from <br /> 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 and other nonporous substrates by using chemical cleaners or other means that neither are harmful <br /> to substrates nor leave residues capable of interfering with adhesion of joint sealants. <br /> C. Joint Priming: Prime joint substrates where indicated or where recommended by joint sealant manufacturer. Apply <br /> primer to comply with joint sealant manufacturer's recommendations. Confine primers to area of joint sealer bond; <br /> do not allow spillage or migration onto adjoining surfaces. <br /> D. Masking Tape: Use masking tape where required to prevent contamination of adjacent surfaces; remove tape <br /> immediately after tooling without disturbing seal. <br /> 3.02 INSTALLATION <br /> A. Comply with joint sealant manufacturer's printed installation instructions. <br /> 07900-2 No.99132-CP2 <br />