| Titre : |
The experience factor in coating development : Two decades of research into the durability of exterior wood coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Gerhard Grüll, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 16-22 |
| Langues : |
Anglais (eng) |
| Catégories : |
Applications extérieures
Bois -- Revêtements protecteurs
Durée de vie (Ingénierie)
Revêtements -- Analyse
Revêtements -- Détérioration
Revêtements organiques
Revêtements protecteurs -- Détérioration
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The service life of exterior wood coatings has been a key issue in the research group on surfaces at Holzfoschung Austria for about 20 years. It is worth summarising the experience gathered during this period and loocking back on the development of conclusions for practice. Have early theories and recommendations from a young research team been proven in practice ? |
| Note de contenu : |
- Estimated maintenance intervals
- Limit states help with maintenance decisions
- Standardised testing to ascertain real-life durability
- Opaque coatings proved more durable
- Service life prediction model
- Hail resistance to improve durability
- Fig. 1 : Time to failure as a function of dry film thickness of 26 out of 30 coating systems on wood in natural weathering
- Fig. 2 : Time to failure as a function of brightness of 26 out of 30 coating systems on wood in natural weathering
- Fig. 3 : Time tofailure of 26 out of 30 coating systems on wood in natural weathering compared to artificial weathering
- Fig. 4 : The SERVOWOOD service life prediction model gives results relative to a reference system ; a web-based application to use this model is under development
- Fig. 5 : Schematic of hail damage and degradation of a coating on wood with moisture ingress, followed by growth of blue stain fungi and flaking ; maintenance can be possible until step 3
- Fig. 6 : Section through a hail impact on coated wood after nine months natural weathering ; vanish without primer, strong discoloration and fungal growth in the wood and varnish with primer, no fungal growth, hardly any discoloration
- Table 1 : Guidance values for maintenance intervals of exterior wood coatings on cladding and balconies
- Table 2 : Definition of limit states for wood coating system |
| En ligne : |
https://drive.google.com/file/d/1UIKTEwCWqAj9pZ5fqRVBN20kOldC2IRg/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34589 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 9 (09/2020) . - p. 16-22
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The experience factor in coating development in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2020)
