| Titre : |
Troubled bridge over salt water |
| Type de document : |
texte imprimé |
| Auteurs : |
Michael O. Woodward, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 22-27 |
| Langues : |
Américain (ame) |
| Catégories : |
Délaminage
Epoxydes
Ponts -- entretien et réparations
Ponts métalliques -- Revêtements protecteurs
Revêtements -- Entretien et réparations:Peinture -- Entretien et réparations
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The Miami Avenue Bridge consists of a pair of 629-foot bascule bridges that sit in the heart of downtown Miami’s Brickell City Center. It is surrounded by high-rise buildings and crosses over the Miami River, a heavily utilized waterway for recreational crafts, cargo vessels and private yachts traveling to and from the Atlantic Ocean.
The existing coatings on the bridge spans were experiencing catastrophic intercoat delamination failure between the intermediate coat and the inorganic zinc-rich primer. The primer was tested by an independent third-party inspection firm. They determined it had sufficient adhesion values and life-cycle remaining, making it a strong candidate for an overcoat system in lieu of a full blast requirement. Furthermore, officials involved with the project wanted to limit the amount of downtime required to take the bridge out of service in order to perform the scheduled repairs — expediting the revitalization of the coatings by minimizing the surface preparation requirements as much as possible without compromising the integrity and performance value of the applied system. |
| Note de contenu : |
- Coating selection
- Projet implementation
FIGURES : 1. The topside of the bridge span showing the existing coating failure - 2. The underside of the bridge span showing the existing coating failure - 3. Cross-linked polymeric epoxy intermediate coat application - 4. North spans completed; south side preparations beginning - 5. New galvanized grating being installed over completed spans - 6. QA/QC — dry-film thickness-testing reading taking place - 7. Finished application of the coating system
TABLE : Dry-film thickness and adhesion tests |
| En ligne : |
http://www.paintsquare.com/archive/?fuseaction=view&articleid=6145 |
| Format de la ressource électronique : |
Web |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29507 |
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 10 (10/2017) . - p. 22-27
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