Guidelines for repair and maintenance of bridge coatings overcoating
The subject program investigated the applicability of various materials and methods for repair and overcoating of existing steel bridge paint systems. The program included information review, material selection, laboratory screening testing, and extended field exposure testing phases. Sixteen commercially available industrial maintenance coating systems were applied in parallel test patches to four separate structures. These structures are located in Chicago, Illinois; New York, New York; Manchac, Louisiana; and Hookset, New Hampshire. Typical surface preparation procedures used on overcoating jobs were used to clean test patch areas. This included low pressure water washing and mechanical removal of loose paint and rust using power tools. Results indicate varying performance between the coatings tested.
"The subject program investigated the applicability of various materials and methods for repair and overcoating of existing steel bridge paint systems. The program included information review, material selection, laboratory screening testing, and extended field exposure testing phases. Sixteen commercially available industrial maintenance coating systems were applied in parallel test patches to four separate structures. These structures are located in Chicago, Illinois; New York, New York; Manchac, Louisiana; and Hookset, New Hampshire. Typical surface preparation procedures used on overcoating jobs were used to clean test patch areas. This included low pressure water washing and mechanical removal of loose paint and rust using power tools. Results indicate varying performance between the coatings tested."@en
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