| Titre : |
Bedeviled bridges : An answer to a national scandal |
| Type de document : |
texte imprimé |
| Auteurs : |
Mike O'Donoghue, Auteur ; Vijay Datta, Auteur ; Glenn Hollins, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 22-36 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Expertises
Ponts -- entretien et réparations
Ponts métalliques -- Revêtements protecteurs
Revêtements (produits chimiques):Peinture (produits chimiques)
Sulfonate de calcium
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In some quarters of society there is a public outcry regarding the significant corrosion, coating deterioration and safety concerns associated with North American bridges. Against this backdrop, this article will describe the application of an innovative coating system for the rehabilitation and lead abatement of a major truss bridge superstructure in Alberta, Canada more than 20 years ago.
At that time, this one-coat, high-ratio calcium sulfonate alkyd (HRCSA) coating system was deemed best-in-test for the superstructure and crevice-corroded joints of the High Level Bridge in Edmonton. The high-performance coating was subsequently applied under the direction and inspection of co-author Glenn Hollins in 1995, as he was the owner’s representative during the evaluation and construction phases.
This article outlines the findings of the current inspection of the coating system on the bridge and also explains the specific chemistry of HRCSA technology that indicated years ago that it should have been, and indeed has since proven to be, the “answer” for many bridge rehabilitation coating projects and the "answer" today for what some describe today as a national scandal. |
| Note de contenu : |
- High-ration calcium sulfonate coatings
- The chemistry of HRCSA coatings
- The high level bridge
- The HRCSA coating application in 1995 on the high level bridge
- The HRCSA coating condition up to 2015 on the high level bridge
- Mission accomplished
- FIGURES : 1 and 2. After project completion and the superstructure between river piers in 2017. - 3. HRCSA full coat application - 4 and 5. Containment structure and resident birds in 1995 - 6. Areas after SSPC-SP-6/NACE ° 3. Commercial blast cleaning and penetrant sealin - 7. HRCSA full coat application - 8. Stripe coating with HRCSA finish coat
- TABLES : 1. Factors in HRCSA coatings that influence their performance on bridges - 2. High level bridge rehabilitation project (1995) by the numbers |
| En ligne : |
http://www.paintsquare.com/archive/index.cfm?fuseaction=view&articleid=6065 |
| Format de la ressource électronique : |
Web |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29082 |
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 5 (05/2017) . - p. 22-36
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