Journal article 642 views 81 downloads
Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
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Eifion Jewell
Buildings, Volume: 13, Issue: 2, Start page: 270
Swansea University Authors:
Tim Savill , Eifion Jewell
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© 2023 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license
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DOI (Published version): 10.3390/buildings13020270
Abstract
Organically coated architectural steel provides an economic, visually attractive, innovation friendly and robust building cladding. However, its performance, usually calculated using accelerated weathering and ‘artificial’ outdoor weathering testing, can be compromised within specific areas of the b...
| Published in: | Buildings |
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| ISSN: | 2075-5309 |
| Published: |
MDPI AG
2023
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa62322 |
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| Abstract: |
Organically coated architectural steel provides an economic, visually attractive, innovation friendly and robust building cladding. However, its performance, usually calculated using accelerated weathering and ‘artificial’ outdoor weathering testing, can be compromised within specific areas of the building envelope. The exact reasons for this are not fully understood. In an attempt to discern where and why performance varies, an investigation is carried out into some possible reasons for the performance discrepancy, and it is concluded that a combination of high humidity and the build-up of aggressive natural deposits contribute to high degradation rates in sheltered regions, such as building eaves, where microclimates are created. The build-up of deposits and their effect is presented as a key degradation accelerant during in-use service. A numerical simulation approach is developed to predict the natural washing, via rain impact and characteristics of the building analysed. This approach shows promise for determining areas unlikely to be naturally washed, and therefore subjected to a degradation accelerating, build-up of deposits. It is shown that such a simulation could be used to optimize the building design process to promote natural washing as well as provide an area-of-concern map in which exposed cut edge should be avoided and any manual inspection should be concentrated. It is also shown that nearby buildings can provide sheltering effects leading to decreased natural washing, increased deposit build-up and ultimately accelerated failure. |
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| Keywords: |
organic coatings; degradation; corrosion; localised building conditions |
| College: |
Faculty of Science and Engineering |
| Funders: |
The authors would like to acknowledge M2A funding from the European Social Fund via
the Welsh Government (c80816), the Engineering and Physical Sciences Research Council (Grant
Ref: EP/L015099/1), and Tata Steel Colors, which have made this research possible. |
| Issue: |
2 |
| Start Page: |
270 |