3356.1SCOPE
Provide retroreflective thermoplastic pavement marking product prefabricated for recessed traffic marking on bituminous and concrete pavements.
3356.2REQUIREMENTS
A General Provide thermoplastic pavement marking product meeting the following requirements and characteristics: Made of prefabricated retroreflective, resilient thermoplastic Material Contains glass beads uniformly distributed through the entire cross -sectional area Does not require pre-heating, unless used for the removal of moisture Capable of being affixed to bituminous or concrete pavement by heating
Resistant to deterioration due to exposure to sunlight, water, salt, and adverse weather conditions Under traffic wear, shows no appreciable fading in accordance with the color requirements in 3356.2C, “Color,” lifting, or shrinkage throughout the life of the marking Capable of conforming to pavement contours, breaks, and faults through the action of traffic at normal pavement temperatures Possesses resealing characteristics, such that it is capable of fusing with itself and previous thermoplastic markings when heated Protected during shipment and in storage B Retroreflectivity Provide preformed thermoplastic pavement marking Material meeting the minimum initial pavement marking retroreflectivity values using 30 meter geometry and meeting the testing procedures of ASTM E1710, Standard Test Method for Measurement of Retroreflective Pavement Marking Materials with CEN-Prescribed Geometry Using a Portable Retroreflectometer. Table 3356.2-1 Minimum Initial Pavement Marking Retroreflectivity White Yellow Thermoplastic 300 milli-candela/ meters squared/lux 200 milli-candela/ meters squared /lux Thermoplastic, enhanced skid resistance (ESR) 250 milli-candela/ meters squared /lux 150 milli-candela/ meters squared /lux C Color Provide preformed thermoplastic pavement marking Material meeting the following requirements:
“D65/2”: Table 3356.2-2 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
35 percent minimum for white and 25 percent minimum for yellow
ASTM D6628, Standard Specification for Color of Pavement Marking Materials Table 3356.2-3 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
D Glass Beads Ensure intermixed glass beads provided in the preformed thermoplastic Material meet the requirements of AASHTO M 247 Standard Specification for Glass Beads Used in Pavement Markings , Type 1 and/or Type 3 to meet the retroreflectivity requirements of section 3356.2B, “Retroreflectivity,” above, and have a minimum of 80 percent rounds. E Skid Resistance Ensure the surface of the retroreflective preformed thermoplastic Material provides a skid resistance value of at least 45 British Pendulum Number (BPN) when tested in accordance with ASTM E303, Standard Test Method for Measuring Surface Frictional Properties Using the British Pendulum Tester. Ensure that the surface of preformed thermoplastic Material with enhanced skid resistance (ESR) provides a skid resistance value of at least 60 BPN. F Thickness Provide retroreflective thermoplastic pavement marking Material at least 90 mils thick.
3356.3SAMPLING AND TESTING
Submit a sample measuring at least 6 inch by 6 inch of precut legends or 1 sheet of precut line Material of each color used to the Materials Laboratory. Submit to the Engineer a manufacturer’s Certificate of Compliance. Mark the samples with the following information:
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