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From page 1...
... 1-1   Purpose of the Airfield Guide for Engineers This airfield guide provides information to help engineers and others who are tasked with removing airfield markings from a variety of pavements using a variety of methods while also mitigating the appearance of scarring and reducing pavement damage from marking removal. It includes best practices for efficient, safe, cost-effective, and environmentally acceptable techniques for marking removal and for temporary marking applications.
From page 2...
... 1-2 Airfield Pavement Markings: Effective Techniques for Removal and Temporary Applications Considerations Based on Marking Type and Thickness The main consideration for removing any type of marking is its thickness. Paint markings are applied in thin layers but are often reapplied numerous times.
From page 3...
... Airfield Guide for Engineers 1-3   so the runway landing designation markings must be changed from "36" to "1." In this instance, 100% of the marking "36" would be removed so as not to conflict with new "1" marking.
From page 4...
... 1-4 Airfield Pavement Markings: Effective Techniques for Removal and Temporary Applications method(s) of paint removal.
From page 5...
... Airfield Guide for Engineers 1-5   Removal Type Advantages Disadvantages Grinding • Hand-operated or vehicle-mounted. • High efficiency with vehicle-mounted units.
From page 6...
... 1-6 Airfield Pavement Markings: Effective Techniques for Removal and Temporary Applications Concrete Asphalt Poor Asphalt Seal Coat Equipment Type G U G U G U N/A Grinding N Y N Y N Y Y Shot blasting N Y N Y N C N Sandblasting Y Y Y Y Y Y Y Water blasting Y Y Y Y C C C Notes: G = Grooved pavement, U = Ungrooved pavement, Y = Acceptable for use, N = Not a preferred method, and C = Use in combination with grinding Factors Level Coating type Waterborne/solvent/epoxy Thickness <40 mils Degree of removal 80%–100% Pavement type ACC or PCC (grooved or ungrooved) Pavement condition under marking Good to excellent Removal method UHP water blasting Factors Level Coating type Any Thickness >40 mils Degree of removal 80%–100% Pavement type PCC (either grooved or ungrooved)
From page 7...
... Airfield Guide for Engineers 1-7   If markings are on grooved asphalt that is in fair condition and have a thickness greater than 40 mils, surface scarification is recommended to remove excess thickness, followed by UHP water blasting to achieve the desired degree of removal and to clean up residue (see Table 1-10)
From page 8...
... 1-8 Airfield Pavement Markings: Effective Techniques for Removal and Temporary Applications marking (see Figure 1-2)
From page 9...
... Airfield Guide for Engineers 1-9   Airfield Marking Removal Best Practices 1. During the design phase of the project, analyze the condition of the markings to be removed and the condition of the pavement under the markings (compare to most recent PCI of the subject pavement)
From page 10...
... 1-10 Airfield Pavement Markings: Effective Techniques for Removal and Temporary Applications Temporary Marking Methods The application of temporary markings typically follows the removal or concealment of permanent markings. The removal of temporary markings needs to be considered; they are often applied using paint at lower application rates than those of permanent markings.
From page 11...
... Airfield Guide for Engineers 1-11   Covering Permanent Markings While Temporary Markings Are in Service Concealing preexisting permanent markings is an option in areas where the markings will be located in the same place after the temporary markings are removed. Blacking out existing markings using temporary black paint can conceal the permanent markings for a temporary application.
From page 12...
... 1-12 Airfield Pavement Markings: Effective Techniques for Removal and Temporary Applications • If a temporary marking is required to be reflective, a full coverage rate using TT-B-1325D Type I glass beads should be used. • If using removable paint, it should be applied under good weather conditions, preferably during daytime hours.
From page 13...
... Airfield Guide for Engineers 1-13   Airfield Temporary Marking Best Practices Best practices for the application and removal of temporary pavement markings vary depending on the pavement surface and condition. A physical barrier to conceal markings that will go back into service after the temporary markings are removed should be considered on both PCC and ACC pavements.

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