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Experimental use of Line-X coated steel pipe piles, Clay Hill Bridge (#2157) replacement project over the Mousam River, Route 9/Western Avenue, Kennebunk, Maine.
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    Steel pipe piles used by MaineDOT for bridge construction are typically coated with a fusion-bonded epoxy (FBE). FBE is a powder-based coating with properties similar to traditional

    epoxies. Its name is derived from the process by which it adheres to a substrate. When the

    hardener and epoxy react through heating, the coating takes a solid form as the chemicals are

    cross-linked and bonded to the substrate (ThomasNet.com).

    One of the major problems with the FBE coating is that once cured it is brittle and tends to chip

    easily from handling during shipping, stockpiling, and the driving process. Recoating and repair

    of the FBE finish in the field can take up to two hours to complete.

    Line-X® coating is a tough, yet resilient polyurea-based coating system that has demonstrated its

    resistance to chipping and de-bonding in its history as a spray-on lining for pickup truck beds.

    Line-X® Franchise Development Company of Huntsville, AL is a manufacturer and franchisor

    of their patented spray applied protective coatings systems used primarily for truck bed lining.

    Line-X® coating is a two-step process using their FCP primer and XS-350 top coat which is a

    100% polyurea elastomer coating.

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