2213 - SPRAYED THERMOPLASTIC PAVEMENT MARKING MATERIAL 2200-19
2213.1 Description
This specification covers thermopl astic materials suitable for use as retroreflecting pavement markings on asphalt pavement. The material is applied to the pavement in molten form by spray means. Glass beads are pre-mixed into the material furnished, and also dropped on the surface of the molten material immediately after it is applied to the pavement surface, at a rate specified. Upon cooling to normal pavement temp erature, the material produces an adherent retroreflective marking of specified thickness and width, capable of resisting deformation by traffic.
2213.2 Requirements
a. General.
1.Provide the material in white and/or yellow as specified.
2.Provide 100% solids thermoplastic material that is homogeneously composed of pigment, filler, resins and glass beads. The material must have a minimum binder c ontent of 25% by mass composition and be free of foreign objects that would cause bleeding, staining, or discoloration. Upon heating to application temperature, the material will not exude fumes that are toxic, or injurious to persons or property. b. Pigment.
1.Use high-grade titanium dioxide as the pigment for the white material. The material must contain a minimum of 10% titanium dioxide by mass.
2.Use heat resistant and colorfast yellows, golds, or oranges to produce a material to comply with color requirements.
3.Yellow pigments must comply with the latest OSHA standards for toxic heavy metals.
4.Use a filler consisting of white calcium carbonate, silica, or an approved substitute. c. Glass Beads. Provide glass beads according to the thermoplastic manufacturer’s recommendations. d. Thermoplastic Material. Provide thermoplastic material that complies with the following:
1.Specific Gravity--2.0 maximum
2.Daylight Reflectance (Y)
a.White—75% minimum
b.Yellow—45% minimum
3.Color—meets the requirements of ASTM D 6628. Yellow lines must display a nighttime presence of yellow when viewed under automobile headlights.
4.Retroreflectivity—Provide sprayed thermoplastic that meets the following minimum retroreflectivity requirements using an acceptable 30-meter retroreflectometer: TABLE 2213-2: SPRAYED THERMOPLASTIC RETROREFLECTIVITY REQUIREMENTS Color Millicandelas/sq m/lux (min.) White 300 Yellow 225
5.Softening Point--180°F minimum
6.Cracking Resistance at Low Temperature--No visible cracks when observed from a distance of one foot. e. Binder-Sealer. When a binder-sealer is specified, provide one that is recommended by the manufacturer of the thermoplastic material, and apply it according to the manufacturer's instructions. The binder-sealer must be compatible with the pavement material, and form a tight bond between the pavement and the thermoplastic material. 2213 - SPRAYED THERMOPLASTIC PAVEMENT MARKING MATERIAL 2200-20
2213.3 Test Methods
a. Thermoplastic Material. Use AASHTO T 250 except for:
1.Softening Point-Heat the material for 4 hours ± 5 minutes at 375 ± 2ºF.
2.Cracking Resistance at Low Temperature-Heat the material for 4 hours ± 5 minutes at 375 ± 2ºF.
3.Glass Beads content. ASTM D 4797 and AASHTO T 247.
4.Titanium Dioxide. ASTM D 1394, Aluminum Reduction Method.
2213.4 Prequalification
a. Manufacturers interested in prequalifying material under this specification must provide a 10-lb sample of each color to the Engineer of Tests. Also include a copy of the quality contro l test report for each lot of material, material safety data sheets, and a complete set of installation recommendations and instructions. b. If the material complies with all laboratory requirements, the manufacturer will be contacted to arrange for the field evaluation. The field evaluation will consist of 2 or 3 test projects at times and locations as determined by the Bureau of Transportation Safety and Technology. Manufacturers must specify if the material may be used on both asphalt and concrete surfaces or only on asphalt or concrete surfaces. Duration of the test project will be dependent on the submittal of test data from the AASHTO National Transportation Product Evaluation Program (NTPEP). Fo rward an official copy of the test data along with evidence that the material referenced is identical to that submitted for prequalification to the Engineer of Tests for evaluation. Materials with no test data will have a test project duration of 18 months; materials with test data will have a test project duration of 12 months. Materials will be evaluate d initially and every 3 to 6 months throughout the duration of the test project for retroreflectivity, color and durability. c. The material will be evaluated for compliance wi th all requirements of this specification, and the manufacturer will be notified of the results. The Bureau of Construction and Materials will maintain a list of qualified materials and installation instructions. Products will remain on the prequalified list as long as the results of verification testing and field performance are satisfactory. Any changes in formulation should be reported to the Engineer of Tests for review and evaluation to determine if requalification is necessary.
2213.5 Basis of Acceptance
a. Thermoplastic Material.
1.Prequalification as required by subsection 2213.4.
2.Receipt and approval of a Type C certification as specified in DIVISION 2600 for each lot of material used. b. Glass Beads for Drop-on Application.
1.Receipt and approval of a Type D certification as specified in DIVISION 2600.
2.Copies of testing results for each lot of beads used on the project. c. Binder-Sealer. If binder-sealer is required, it will be accepted based on brand name as recommended by the thermoplastic material manufacturer, and visual observation of performance in the field.
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Source: Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 923–924 of 978. View official source ↗