[article]
| Titre : |
Performance or preference : City of Anoka water tank reconditioning revisited |
| Type de document : |
texte imprimé |
| Auteurs : |
Dan Zienty, Auteur ; Elliott Hendrickson, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 22-32 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Couches minces multicouches
Entretien et réparations
Epoxydes
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Primaire (revêtement)
Réservoirs (récipients) -- revêtements protecteurs
Zinc
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In 2003, the City of Anoka, MN, completed the reconditioning of its 400,000-gallon legged water storage tank. A two-year warranty inspection followed in 2005. The project was reported in the May 2007 issue of the JPCL.1 The significance of the project, as highlighted in the May 2007 article, was that the tank provided the opportunity to test and compare the perfor
mance of three coating systems for reconditioning interior surfaces in immersion and above the high water line (the vapor area), an area that is always difficult to protect. Systems tested included two NSF-approved, AVVWA standard multi-coat systems (AVVWA ICS No. 1, a two-coat epoxy polyamide and AVVWA ICS No. 5, a moisture-cured [MCUI zinc primer/epoxy polyamide/epoxy polyamide), and a single-coat (untopcoated) MCU zinc coating recently approved by NSF but not an AWWA standard system. The 2005 inspection, as reported in the May 2007 JPCL, showed that all three systems were performing well.
In 2009, the City contracted again with an engineer for a periodic inspection of the tank, including the interior surfaces. The results of the evaluation led to planning between the City and its engineer for the completion of maintenance repairs scheduled for the summer of 2011. In the end, surfaces primed with the MCU organic zinc performed best. This article summarizes the original project and 2005 warranty inspection results, then focuses on subsequent inspection, repair, and performance of the interior linings tested above the high water line. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19140 |
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 30, N° 5 (05/2013) . - p. 22-32
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Performance or preference in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 5 (05/2013)
