3591Water-based Traffic Paint

3591.1SCOPE

Provide fast-dry white and yellow acrylic latex traffic marking paints for use with drop -on glass beads for application on concrete and bituminous pavements.

3591.2REQUIREMENTS

A General Requirements Use paint listed on the APL for “Latex Paint and High Build Latex Paint.”

A.1 Quality Provide paint meeting the following requirements and characteristics:

spray temperatures with drop-on glass beads

application or appearance of the paint A.2 Package Stability Within 12 months from the time of delivery, if the paint cakes, settles, livers, thickens, skins, curdles, gels, or shows other objectionable properties not correctable with stirring, return the paint to the manufacturer for credit. Ensure the manufacturer adds anti-settling agents, stabilizers, and other additives to ensure proper storage stability. A.3 Manufacturing and Packaging Provide paint from a manufacturer capable of producing paint in batches of at least 1,000 gallons. Provide paint screened with a 40 mesh or finer screen to remove coarse particles, skins, or foreign Material. Provide paint packaged in lined, new totes of 55 gallon or 5 gallon containers meeting the following requirements and characteristics:

To prevent formation of “skins,” ensure the manufacturer uses one of the following:

B Properties of Finished Paint Provide finished paint with properties in accordance with either Table 3591.2-1 or Table 3591.2-2: Table 3591.2-1 High Solids Paint Properties Parameter Test Method Range Weight per gallon at 77°F ASTM D1475* ≥12.0 pounds per gal Viscosity, Krebs Stormer, at 77°F ASTM D562ǁ 80 – 100 Krebs units Grind, Hegman ASTM D1210† ≥3 Total solids ASTM D2369ǂ ≥ 73 percent by weight Non-volatile vehicle ≥43 percent by weight Pigment ASTM D2371# 45 – 62 percent by weight Dry time, 12 mil WFT at 65 percent RH ASTM D711§, Laboratory Manual ≤ 12 minutes Dry through, at 90 percent RH Laboratory Manual ≤ 130 minutes Daylight directional reflectance, white ASTM E1349** ≥ 83 percent Daylight directional reflectance, yellow ASTM E1349** ≥ 50 percent Contrast ratio, 15 mil wet ASTM D2805ǁǁ ≥ 0.98 Flexibility and adhesion Laboratory Manual No cracking or flaking Water resistance Laboratory Manual No blistering or loss of adhesion Settling Laboratory Manual ≥ 6 rating Skinning at 48 hours Laboratory Manual none Track free time Laboratory Manual ≤ 3 minutes pH ASTM E70†† ≥ 9.6 Lab Retro-reflectivity, white, min., milli-candela/meters squared/lux Laboratory Manual 300 Lab Retro-reflectivity, yellow, min., milli-candela/meters squared/lux Laboratory Manual 200 * ASTM D1475, Standard Test Method for Density of Liquid Coatings, Inks, and Related Products ǁ ASTM D562, Standard Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer † ASTM D1210, Standard Test Method for Fineness of Dispersion of Pigment Vehi cle Systems by Hegman-Type Gage ǂ ASTM D2369, Standard Test Method for Volatile # ASTM D2371, Standard Test Method for Pigment Content of Solvent -Reducible Paints § ASTM D711, Standard Test Method for No-Pick-Up Time of Traffic Paint, modified **ASTM E1349, Standard Test Method for Reflectance Factor and Colo by Spectrophotometry Using Bidirectional (45°:0° or 0°:45°) Geometry ǁǁ ASTM D2805, Standard Test Method for Hiding Power of Paints by Reflectometry †† ASTM E70, Standard Test Method for pH of Aqueous Solutions With the Glass Electrode

Table 3591.2-2 High Build Paint Properties Parameter Test Method Range Weight per gallon at 77°F ASTM D1475* ≥12.0 pounds per gal Viscosity, Krebs Stormer, at 77°F ASTM D562ǁ 83 – 98 Krebs units Grind, Hegman ASTM D1210† ≥3 Total solids ASTM D2369ǂ ≥ 73 percent by weight Non-volatile vehicle ≥43 percent by weight Pigment ASTM D2371# 45 – 62 percent by weight Dry time, 15 mil WFT at 50 percent RH ASTM D711§, modified – Laboratory Manual ≤ 10 minutes Dry time, 25 mil WFT at 50 percent RH ASTM D711§, modified – Laboratory Manual ≤ 25 minutes Dry through, at 90 percent RH Laboratory Manual ≤ 150 minutes Daylight directional reflectance, white ASTM E1349** ≥ 83 percent Daylight directional reflectance, yellow ASTM E1349** ≥ 50 percent Contrast ratio, 15 mil wet ASTM D2805ǁǁ ≥ 0.98 Flexibility and adhesion Laboratory Manual No cracking or flaking Water resistance Laboratory Manual No blistering or loss of adhesion Settling Laboratory Manual ≥ 6 rating Skinning at 48 h Laboratory Manual none Track free time Laboratory Manual ≤ 3 minutes pH ASTM E70†† ≥ 9.6 Lab Retro-reflectivity, white, min., milli-candela/meters squared/lux Laboratory Manual 300 Lab Retro-reflectivity, yellow, min., milli-candela/meters squared/lux Laboratory Manual 200 * ASTM D1475, Standard Test Method for Density of Liquid Coatings, Inks, and Related Products ǁ ASTM D562, Standard Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer † ASTM D1210, Standard Test Method for Fineness of Dispersion of Pigment Vehicle Systems by Hegman-Type Gage ǂ ASTM D2369, Standard Test Method for Volatile # ASTM D2371, Standard Test Method for Pigment Content of Solvent -Reducible Paints § ASTM D711, Standard Test Method for No-Pick-Up Time of Traffic Paint, modified **ASTM E1349, Standard Test Method for Reflectance Factor and Colo by Spectrophotometry Using Bidirectional (45°:0° or 0°:45°) Geometry ǁǁ ASTM D2805, Standard Test Method for Hiding Power of Paints by Reflectometry †† ASTM E70, Standard Test Method for pH of Aqueous Solutions With the Glass Electrode C Specific Requirements For high solids paints meeting the requirements of Table 3591.2-1 use a vehicle composed of a 100 percent acrylic polymer. For high build paints meeting the requirements of Table 3591.2-2 use Rohm & Hass HD-21, Dow DT400, or approved equal acrylic emulsion polymer. Use white Material no darker than or no yellower than 17778 of Federal Standard Number 595C Colors.

Use yellow paint with a daytime color meeting the following CIE Chromaticity limits using illuminant “D65/2”: Table 3591.2-3 Daytime Chromaticity Coordinates (Corner Points) 1 2 3 4 x 0.465 0.485 0.520 0.480 y 0.450 0.470 0.450 0.420

Use yellow paint with a nighttime color meeting the following chromaticity limits as specified by ASTM D6628, Standard Specification for Color of Pavement Marking Materials, Table 2. Table 3591.2-4 Nighttime Chromaticity Coordinates (Corner Points) 1 2 3 4 x 0.575 0.508 0.473 0.510 y 0.425 0.415 0.453 0.490

Use white and organic yellow paints free of the following heavy metals:

Agency

3591.3SAMPLING AND TESTING

Provide 1 pint manufacturer-provided paint samples of each batch and a certification stating that the sample represents the full manufactured batch. The Department may base acceptance on 1 pint samples taken at the point of delivery or from the Contractor’s supply. Submit to the Materials Laboratory the manufacturer’s certified test results with each batch of paint, including tests for weight per gallon, viscosity, and drying time. Provide the manufacturer’s certified test results, for tests performed annually at the start of paint production, meeting the following requirements:

Table 3591.3-1 Paint Property Standard Parameter Standard Weight per gallon ASTM D1475* Viscosity ASTM D562ǁ Grind fineness ASTM D1210† Total solids ASTM D2369ǂ Total pigment ASTM D2371# Dry time ASTM D711§, modified Daylight directional reflectance ASTM E1349** Contrast ratio, 15 mil wet ASTM D2805ǁǁ Color ASTM E1349** pH ASTM E70†† * ASTM D1475, Standard Test Method for Density of Liquid Coatings, Inks, and Related Products ǁ ASTM D562, Standard Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer † ASTM D1210, Standard Test Method for Fineness of Dispersion of Pigment Vehicle Systems by Hegman-Type Gage ǂ ASTM D2369, Standard Test Method for Volatile # ASTM D2371, Standard Test Method for Pigment Content of Solvent - Reducible Paints § ASTM D711, Standard Test Method for No-Pick-Up Time of Traffic Paint, modified **ASTM E1349, Standard Test Method for Reflectance Factor and Colo by Spectrophotometry Using Bidirectional (45°:0° or 0°:45°) Geometry ǁǁ ASTM D2805, Standard Test Method for Hiding Power of Paints by Reflectometry †† ASTM E70, Standard Test Method for pH of Aqueous Solutions With the Glass Electrode