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IN <br /> � a Y'a VV 1 <br /> a <br /> cy1i c$F a4 W4 �' .� �. .�� ' �y.`. r" xr ` +: ,; ., . ,gVVI11 <br /> _v . .. � .�„i.y . °s, . . . ”;* p, • . . . ,5 ` 4c '�.^ ,rs =s" <br /> exposed metal surface subsequent to hand tool cleaning in accordance with SSPC - SP2 . A change <br /> in the coating color in excess of 80Es per the CIE L* a * b * 1976 will constitute a color retention <br /> failure . The Department will measure the CIE 1976 color chromaticity coordinates for the color <br /> of the top coat of the two sample coupons provided with a BYK-Gardner Handicolor colorimeter <br /> using D65 illuminant and 2 degree geometry settings . The Department -measured L * a * b * <br /> chromaticity coordinates shall define the initial color and will be used for resolution of color <br /> retention failures and the resolution of color retention disputes . All paint systems shall possess <br /> physical properties and handling characteristics that are compatible with the application <br /> requirements of Section 649 . Materials shall be specifically intended for use over galvanized <br /> steel . <br /> 975.5 Elastomeric Coatings . <br /> 975-5 . 1 General : Use an elastomeric coating system to provide a waterproof barrier over <br /> post-tensioning anchorages or other areas designated in the plans . The components of the coating <br /> system shall be supplied by a single manufacturer and sold as a waterproof coating system . The <br /> surface preparation and application of the coating system shall be performed in strict accordance <br /> with the manufacturer ' s specifications . <br /> 975-5 . 2 Physical Properties : The use of an epoxy prime coat is dependent upon the <br /> requirements of the manufacturer ' s waterproofing system . The polyurethane chemistry may be <br /> either waterborne aromatic (moisture- curing) or aromatic (moisture - sensitive) . The minimum <br /> thickness of the system shall not be less than 30 mils . The elastomeric coating shall meet the <br /> following requirements : <br /> Property Test Method Requirement <br /> Hardness , Shore A ASTM D 2240 Between 60 and 90 <br /> Tensile Strength ASTM D 412 _>750 psi <br /> Elongation ASTM D 412 >400 % <br /> Tear Strength ASTM C 957 >70 pli <br /> Abrasion Resistance H48 ASTM C 957 <350 m loss / 1 , 000 revs , <br /> wheels 1 , 000 gm/wheel — g <br /> Crack Bridging 1 , 000 Cycles ASTM C 957 System Passes <br /> Elongation Recovery ASTM C 957 >94 % <br /> 975-5 .3 System Modifications for Use on Bridge Substructure : Supply the elastomeric <br /> coating system with a 100 % acrylic aliphatic polyurethane top coating . <br /> LLL <br /> 975-6 Class 5 Applied Finish Coatings . <br /> 975-6 . 1 General : All coatings shall possess physical properties and handling <br /> characteristics compatible with the application requirements of Section 400 . Unless otherwise <br /> specified, the color of the finish coat shall meet Federal Color Standard No . 595B , Table VIII, <br /> Shade No . 36622 , <br /> 975- 6 . 2 Coating Requirements : Use 4 inch by 8 inch (except as required below) fiber <br /> cement test panels with a mass of 7 to 9 pounds per square foot of surface area to perform the <br /> laboratory tests . Coating performance shall meet the following requirements : <br /> Laboratory Testing <br /> -244- <br /> FPID (S ) : 423186 - 1 - 58 - 01 <br /> IN <br /> K ' Lit lK$ <br />