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Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding

Tim Savill Orcid Logo, Eifion Jewell Orcid Logo

Buildings, Volume: 13, Issue: 2, Start page: 270

Swansea University Authors: Tim Savill Orcid Logo, Eifion Jewell Orcid Logo

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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...

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Published in: Buildings
ISSN: 2075-5309
Published: MDPI AG 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa62322
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spelling 2023-01-26T14:33:11.7897941 v2 62322 2023-01-13 Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding 633772f4c0a71d30f5603d4f5e0f4730 0000-0002-2750-1492 Tim Savill Tim Savill true false 13dc152c178d51abfe0634445b0acf07 0000-0002-6894-2251 Eifion Jewell Eifion Jewell true false 2023-01-13 FGSEN 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. Journal Article Buildings 13 2 270 MDPI AG 2075-5309 organic coatings; degradation; corrosion; localised building conditions 17 1 2023 2023-01-17 10.3390/buildings13020270 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University External research funder(s) paid the OA fee (includes OA grants disbursed by the Library) 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. 2023-01-26T14:33:11.7897941 2023-01-13T13:34:06.7335356 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Tim Savill 0000-0002-2750-1492 1 Eifion Jewell 0000-0002-6894-2251 2 62322__26386__777b677ce33d4694950a6d29f83b393c.pdf 62322.pdf 2023-01-24T13:54:28.8282742 Output 2575698 application/pdf Version of Record true © 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 true eng https://cre-ativecommons.org/licenses/by/4.0/
title Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
spellingShingle Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
Tim Savill
Eifion Jewell
title_short Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
title_full Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
title_fullStr Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
title_full_unstemmed Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
title_sort Understanding and Predicting Localised Variations in the Degradation Rate of Architectural, Organically Coated, Steel Cladding
author_id_str_mv 633772f4c0a71d30f5603d4f5e0f4730
13dc152c178d51abfe0634445b0acf07
author_id_fullname_str_mv 633772f4c0a71d30f5603d4f5e0f4730_***_Tim Savill
13dc152c178d51abfe0634445b0acf07_***_Eifion Jewell
author Tim Savill
Eifion Jewell
author2 Tim Savill
Eifion Jewell
format Journal article
container_title Buildings
container_volume 13
container_issue 2
container_start_page 270
publishDate 2023
institution Swansea University
issn 2075-5309
doi_str_mv 10.3390/buildings13020270
publisher MDPI AG
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
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description 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.
published_date 2023-01-17T04:21:50Z
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