921PAVEMENT MARKING MATERIALS

921.01Blank

921.02Durable Marking Material

Durable marking material shall be thermoplastic, preformed plastic, or multi- component pavement markings. The materials shall not contain any toxic heavy metals above the limits of the regulatory levels of 40 CFR 261.24, table 1, when tested in accordance with EPA TCLP, or contain any other material which will require characterization as a hazardous waste when removed from the pavement surface. 10

This material shall be in solid form in accordance with AASHTO M 249 or supplied in a preformed state and shall not contain lead chromate pigments.

Heat bonded preformed thermoplastic shall be in accordance with AASHTO M 249, except the application properties ou tlined in section 5 of AASHTO M 249 shall not apply. Drying time and short term and long term flowability requirements are not applicable at time of installation. The material shall be capable of fusing to itself and previously applied thermoplastic pavement markings when heated. The material shall 20 contain a minimum of 30% beads by weight. The beads shall be homogeneously blended throughout the material. The marking thickness throughout its width, before the material is heated, shall be supplied at a minimum average thickness of 90 mils.

This material shall consist of a homogeneous preformed plastic film with a width as specified. Dimensional requirements shall meet one of the following:

with a minimum thickness of 60 mils throughout the entire 30 cross-section, or

surface with 35% to 65% of the surface area raised. The edges of the raised areas shall present a near vertical face to traffic from any direction. The minimum thickness of the raised area 921.02

shall be 60 mils. The area between the raised areas shall be a minimum of 20 mils measured at the thinnest section of the cross-section.

The material shall have a precoated adhesive. The adhesive shall allow the preformed plastic material to be repositioned on the pavement surface to which it is applied before permanently fixing it in its final position with downward pressure.

The material shall be capable of being affixed to either HMA or PCCP by means of the precoated adhesive and, following the initial application of pressure, shall mold itself to pavement contours, breaks, and faults by traffic action at normal pavement temperatures.

The near vertical faces of patterned pref ormed plastic shall be coated with a layer 50 of beads.

A Type C certification in accordance with 916 shall be provided for the marking materials except materials used for temporary pavement markings.

Each package shall be marked to indicate the color of the material, specific symbol or word message, the batch number, the manufacturer’s name, address, and the date of manufacture.

A Type C certification in accordance with 916 shall be provided for the performed plastic material.

The material shall be for use on both HMA and PCC pavements. The material shall consist of a pigmented resin system of epoxy. The multi-component pavement markings shall be ultra-violet light resistant and shall not darken during the heating conditions of application, chalk, crack, show appreciable degradation or discoloration due to sunlight exposure and aging of the markings. The cured multi-component 70 pavement markings shall be impervious to salts, grease, oil, fuels, acids, alkalis, and other common chemicals that may be found in or on HMA and PCC pavements. The pigment in the white material shall contain titanium dioxide in accordance with ASTM D476.

The material shall be provided in containers, which are in accordance with current Federal DOT regulations. Each container shall be labeled in accordance with 29 CFR

1910.1200 and include the trade name or trade mark, formulation or product

identification, date of manufacturer, color, batch or lot number, component identification, and mixing instructions. 80

921.02

A Type C certification in accordance with 916 shall be provided for the multi- component pavement marking material.

Snowplowable raised pavement marker shall consist of a cast metal base to which is attached a replaceable prismatic reflector for reflecting light longitudinally along the pavement from a single or from opposite directions. Both ends of the casting shall be shaped to deflect a snowplow blade upward.

The prismatic reflectors and cast metal bases shall be in accordance with ASTM D4383. Only prismatic reflectors and cast metal bases from the QPL of Snowplowable Raised Pavement Markers shall be used.

The epoxy adhesive shall be in accordance with AASHTO M 237, Type IV, Table 3 with respect to composition and performance. A Type B certification in accordance with 916 shall be provided for the epoxy material. The limits of the following shall be shown on the certification:

Property Test Standard Chemical composition AASHTO M 237 Density AASHTO M 237 Gel time AASHTO M 237 Percent air AASHTO M 237 Bond strength AASHTO M 237

A Type C certification in accordance with 916 shall be provided for the pavement marking beads.

Beads shall be glass in accordance with AASHTO M 247, Type 1. The beads shall have a moisture resistant coating. 110

The modified standard beads shall be glass in accordance with AASHTO M 247, Type 2. These beads shall have a moisture resistant coating and may have an adhesion promoting coating.

The supplemental beads shall be glass in accordance with AASHTO M 247, Type 4 except the beads shall have a minimum roundness of 80% by weight.

921.02

These beads shall a have a moisture resi stant coating and may have an adhesion promoting coating.

These shall be for wet weather retro-reflectivity and shall be used for thermoplastic and multi-component longitudinal line markings but shall not exhibit a characteristic of toxicity re ferenced in AASHTO M 247. The supplemental elements shall be selected from the QPL of Pavement Marking Beads.

A Type C certification in accordance with 916 shall be furnished for the 130 supplemental elements.