1048When glass beads are induced into the paint lines, the paint shall provide capillary 300

action in the interstices and voids between the glass beads sufficient to cause the level of paint to raise approximately 2/3 the diameter of the glass beads. This capillary action shall not cause complete envelopment of the glass beads. The paint as furnished shall not contain glass beads. The paint shall be ground to a uniform consistency, and it shall enable satisfactory application by the pressure-spray type of painting equipment. The painting equipment shall use a pressurized bead application method that is designed to apply 4 to 6 in. reflectorized paint lines at paint temperature up to 150°F. The paint shall be capable of being applied at speeds of 10 to 15 mph. The paint shall not darken under the heating conditions of application or show 310 appreciable discoloration due to sunlight exposure and aging of the paint lines. The paint shall be furnished ready for use without thinning, screening, or other modifications and shall not settle, cake, curdle, liver, gel, or have an excessive change in viscosity in the container during a period of one year after manufacture. The paint shall be capable of being stirred to a uniform consistency. The paint shall be able to withstand variations of temperatures when stored outside in the containers as delivered, and in an environment above 40°F. All paint furnished under these specifications will be rejected if it contains skins, thickened or jelly-like layers, lumps, coarse particles, dirt, or other foreign materials which prevent the proper application of the paint, or produces a non-uniform paint line. All paint which cannot be 320 transferred by pumps on the paint equipment from the shipping containers and through the paint equipment due to excessive clogging of screens, filters, or paint guns will be rejected. The paint shall dry to a no-tracking condition in less than 60 s. The no tracking condition shall be determined by actual application of the paint on the pavement at a wet film thickness of 15 mils with glass beads at a rate of 6 lb/gal. The paint lines for the determination of no-tracking condition shall be applied with the specialized painting equipment operated to have the paint at application temperatures up to 140°F at the spray guns. This maximum no tracking time shall not be exceeded when the 330 pavement temperature varies from 50 to 120°F, and with all relative humidity conditions providing that the pavement is dry. The no tracking time shall be determined by passing over the paint line 60 s after the paint application, in a simulated passing maneuver at a constant speed of 30 to 40 mph with a passenger car. A paint line with no visual deposition of the paint to the pavement surface when viewed from approximately 50 ft from the point where the vehicle crossed the paint line shall be considered as showing a condition of no tracking and being in accordance with the requirement. 1. Composition Requirements 340 The exact composition of the waterborne traffic paint shall be left to the discretion of the manufacturer, provided that the finished product is in accordance with the specification requirements. 909.05 1049 The pigment portion of these paints shall be a combination of prime and extender pigments as required to produce either white or yellow waterborne traffic paint in accordance with the color and other requireme nts of the finished product. The yellow waterborne traffic paint pigment shall contain pigment yellow Color Index No. 65, or 74, or 75 or a combination of each. The white waterborne traffic paint pigment shall contain titanium dioxide in accordance with ASTM D476. The non-volatile portion of 350 the vehicle shall be composed of a 100% acrylic polymer. The cured film of waterborne traffic paint shall not contain any toxic heavy metals above the limits of the regulatory levels of 40 CFR 261.24, Table 1 or contain any other material which will require characterization as a hazardous waste for the disposal of the dried film. 2. Specific Requirements Min. Max. Volume solids, ASTM D2697, % 58.0 -- Total solids by mass, ASTM D2369, % 73.0 -- Pigment by mass, ASTM D3723, % 45.0 57.0 Vehicle solids by mass of the vehicle, % 44.0 -- Viscosity, ASTM D562, Krebs Units 75 95 Weight/volume, ASTM D1475, 25°C, kg/L 1.498 -- Weight/volume @ 25°C, variation from the manufacturer’s initially approved batch, ASTM D1475, kg/L. -- 0.024 Dry time, ASTM D711, 15 mils wet film thickness, airflow of less than 50 cu ft/min, without glass beads -- 10 min Reflectance Factor, Y, C.I.E. illuminant, C, 2° standard observer, ASTM E1349, 15 mils wet film thickness, air dried a minimum of 16 h, % White .......................................................... Yellow ........................................................ 84 50 -- Color, yellow only, x - y C.I.E. Coordinates for the strong limits of FHWA color chart PR1, 15 mils wet film thickness, air dried a minimum of 16 h, measured on white background, C.I.E. illuminant, C, 2° standard observer, % deviation Match the strong limits ±6.00 Coarse material retained on a No. 30 sieve, ASTM D185, % -- 0.05 Bleeding ratio, Federal Specifications TT-P-1952B, except asphalt saturated felt paper shall be in accordance with ASTM D226, Type I 0.97 -- Contrast ratio, ASTM D2805, 10 mils wet film thickness on opacity chart 2A or 2C, air dried a minimum of 16 h 0.96 -- Volatile organic compounds, ASTM D3960 from May 1 thru September 30, g/L from October 1 thru April 30, g/L -- -- 105 Abrasion resistance, Federal Specifications TT-P-1952B, L 190 -- (continued on next page) 909.05 1050 (continued from previous page) Min. Max. Freeze-thaw stability, Federal Specifications TT-P-1952B, change in consistency, Krebs Units -- 10 Heat stability, Federal Specifications TT-P-1952B, change in consistency, Krebs Units -- 10 Scrub resistance, ASTM D2486, with abrasive medium and shims, cycles 300 -- Water resistance, Federal Specification TT-P-1952B Film shall not soften, blister, wrinkle, or lose adhesion Flexibility, Federal Specifications TT-P-1952B No cracking or flaking of film Infrared spectrum of the vehicle ASTM D3168 Shall match spectrum of manufacturer’s previously submitted samples Dilution test shall be capable of dilution with water at all levels without curdling or precipitation such that wet paint can be cleaned up with water only.