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AOI'ING FUEL DOCK - TRENCH DRAIN JULY 1994 <br /> D. Instail bond-breaker tapc between sealants and joint fillers, compression seals, or back <br /> of joints where adhesion of sealant to back of joints would result in sealant failure, as <br /> recommended by the sealant manulacturer. <br /> E. Inslali sealbnts by proven installation techniques that result in sealants directly <br /> contacting and fully wetting joint substrates, compietely filling recesses provided for <br /> each joint configuration and providing uniform, cross-sectionai shapes and depths <br /> relative to joint widths, which allow optimpm sealant-movement capability. <br /> F. Instail sealants to depths as recommended by sealant manufacturer and es shown on <br /> the drawings. t <br /> G. Unlas indicated othenvise, provide a slightly concave surface confortning to ASTM <br /> C962. <br /> H. Do not allow sealants or compounds to overflow kom confines of joint or apill onto <br /> adjoining surfaces. Clean the adjoining surfaces to eliminate evidence of spillagc <br /> without damage to adjoining surfaces or finishes. <br /> I. Immediately after sealant installation and ptior to time skimming or curing begins, <br /> tool nonsag sealants to fortn amooth uniform beads of confguration indicated to <br /> eliminate sir pockets and to ensure contact and adhesion of aealant with sides of joint. <br /> Do not use tooling agent which would diswlor sealants or adjacent sutfaces or are not <br /> approved by sealant manufacturer. Remove excess sealant from surfaces adjacent to <br /> joint. <br /> 3.3 CURE AND PROTECTION: <br /> A. Cure swlants in wmpliance with manufacturer's printed instructions and <br /> recommendations to obtain high early bond strongth, internal cohesive strength, and <br /> surface durability. Clue and prote�t Realanu in a manner which will minimiu <br /> increases in modulus of elasticity and other accelerated ageing effects. Contractor <br /> shall replace or testore sealants which are damaged or deteriorated during construction <br /> period. Repaired areas shall be indistinguishable from original work. <br /> 3.4 FIELD QUALITY CONTROL: <br /> A. After nominal cure of exterior joint sealants which are exposed to weather, test for <br /> water leaks as followa: <br /> 1. Flood joint exposure with water directed from a 3/4-inch garden hose and <br /> connected to water system with 25-psi minimum static water presaure. <br /> 2. Hold hose pecpend(cular to wall face, 2'0" from joint, and move stteam of <br /> water along joint at approzimate rate of 20 fat per minute. <br /> 3. Test approximately 596 of total joint syatem in locations which are typical of <br /> every joint condition and which can be inspected easily for leakage on <br /> opposite face. <br /> JOINT SEALANTS 07920 � 4 <br />