964EPOXY PAVEMENT MARKINGS

964.1DESCRIPTION—This work is the furnishing and installation of reflectorized, two -component epoxy

resin pavement markings of the color indicated, with glass beads, at the locations indicated.

964.2MATERIAL—

materials as specified in Section 106.03(b)3.

or fillers.

1 2 3 4 x y x y x y x y White 0.330 0.370 0.355 0.345 0.310 0.300 0.285 0.325 Yellow 0.515 0.465 0.505 0.430 0.440 0.415 0.420 0.443

Furnish black epoxy that satisfies color chip 37038 of Federal Standard 595B and is equal to the quality of the white epoxy being used.

D711 at a temperature of 75F ± 2F at a thickness of 20 mils ±1 mil with glass beads applied at a rate of 20 pounds per gallon of epoxy.

Sieve Size Retained (%) No. 20 17-37 No. 30 45-65 No. 40 14-25

964.3CONSTRUCTION—

• Spraying epoxy material mixed in the proper formulation conforming to manufacturer’s requirements.

• Applying symbol markings and longitudinal lines with the specified glass bead application.

• Heating Epoxy Part A to satisfy manufacturer’s recommendations.

• Heating Epoxy Part B to satisfy manufacturer’s recommendations.

• Mixing Part A with Part B according to manufacturer’s recommendations.

• Applying glass beads using the double drop method.

Provide an operator for the equipment who is fully knowledgeable of all equipment operations and application techniques. Provide a pressure gauge on each proportioning pump to verify pressures. Position these gauges to be easily visible to the operator of the equipment and the Inspector-in-Charge. Obtain from the manufacturer of the epoxy material being used, specifications for the proper mix ratios of the epoxy component, proper temperatures, proper mixing techniques, and any other data to ensure that the epoxy material is being properly installed. Furnish this information to the Inspector -in-Charge at least 5 days before beginning work.

according to Bulletin 15 or recommended by the manufacturer. Clean the roadway surface where the epoxy pavement markings will be applied. Remove all surface treatment , laitance, curing compound , or any contaminants that would hinder adhesion. Clear any loose dirt and other debris from the application area. Surface preparation is incidental to the application of epoxy pavement markings, except for the removal of pavement markings which is performed and paid for under Section 963. Identify the location of the final pavement markings by applying spots on the pavement at 40 -foot intervals. The Inspector-in-Charge will approve the locations.

with and two plates without glass beads or aggregate.

from the indicated width will be allowed provided the variation is gradual and does not detract from the general appearance. For skip line patterns maintain a tolerance of ±6 inches for each 40 -foot cycle and ±3 inches for each 10-foot skip line.

method with a minimum rate of 10 pounds per gallon for Type A beads and 10 pounds per gallon for Type B beads for a total minimum of 20 pounds per gallon of epoxy. Uniformly distribute glass beads on the surface. Provide m arkings with an average minimum initial retroreflectivity of 250 mcd/m2/lux for white and 200 mcd/m2/lux for yellow . Under the direction and supervision of the Representative m easure retroreflectivity with a 30 -meter geometry retroreflectometer conforming to ASTM E1710 within 21 days after installation in accordance with PTM No. 431.

minimum period of 30 minutes or until the epoxy has dried sufficiently to prevent dirt pickup or tracking.

black aggregate, immediately after all white skip line patterns. Use the same line dimensions for both colors.

unless otherwise approved by the Inspector-in-Charge and acceptable to the manufacturer.

which after application and drying, the Inspector-in-Charge determines to be defective. Complete this work at no additional cost to the Department. Major types of defective work and method of repair include the following:

• Insufficient thickness or line width, uneven cross-section. Grind or blast clean defective material to remove a substantial amount of beads and to roughen the marking surface. Remove loose particles and debris with compressed air. Restripe the cleaned surface as specified in this specification.

• Inadequate retroreflectivity, glass bead coverage or retention. Restripe over defective Marking.

• Poor Adhesion, Delaminating. Remove defective markings as specified in Section 963.3 and clean pavement surface, including 1 foot beyond each end of the affected area. Remove loose particles and debris with compressed air. Restripe the marking on the cleaned surface as specified in this specification.

or poor adhesion resulting from defective materials or method of application as specified in Section

107.16(b) for a period of 180 days from the date of acceptance

The Representative will identify material to be repaired or replaced. Begin all repair or replacement work within 30 days of notification by the Representative and perform as specified in these specifications.

964.4MEASUREMENT AND PAYMENT—