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Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather
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Luukkonen, Tero, Yliniemi, Juho, Walkley, Brant, Geddes, Daniel, Griffith, Ben, Hanna, John V., Provis, John L., Kinnunen, Paivo and Illikainen, Mirja (2022) Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather. RSC Advances , 12 (40). pp. 25822-25832. doi:10.1039/D2RA04456K ISSN 2046-2069. [ š Public]. [ (ā) hoa:511 ]
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WRAP-Characterization-of-an-aged-alkali-activated-slag-roof-tile-after-30-years-of-exposure-to-Northern-Scandinavian-weather-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1457Kb) | Preview |
Official URL: http://dx.doi.org/10.1039/D2RA04456K
Abstract
Alkali-activated materials (AAMs) have been known as an alternative cementitious binder in construction for more than 120 years. Several buildings utilizing AAMs were realized in Europe in the 1950sā1980s. During the last 30 years, the interest towards AAMs has been reinvigorated due to the potentially lower CO2 footprint in comparison to Portland cement. However, one often-raised issue with AAMs is the lack of long-term studies concerning durability in realistic conditions. In the present study, we examined a roof tile, which was prepared from alkali-activated blast furnace slag mortar and exposed to harsh Northern Scandinavian weather conditions in Turku, Finland, for approximately 30 years. Characterization of this roof tile provides unique and crucial information about the changes occurring during AAM lifetime. The results obtained with a suite of analytical techniques indicate that the roof tile had maintained excellent durability properties with little sign of structural disintegration in real-life living lab conditions, and thus provide in part assurance that AAM-based binders can be safely adopted in harsh climates. The phase assemblage and nanostructural characterization results reported here further elucidate the long-term changes occurring in AAMs and provide reference points for accelerated durability tests and thermodynamic modelling.
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
| Library of Congress Subject Headings (LCSH): | Aggregates (Building materials), Slag , Aggregates (Building materials) -- Finland -- Turku, Tiles, Roofing , Aggregates (Building materials) -- Analysis | |||||||||
| Journal or Publication Title: | RSC Advances | |||||||||
| Publisher: | Royal Society of Chemistry | |||||||||
| ISSN: | 2046-2069 | |||||||||
| Official Date: | 12 September 2022 | |||||||||
| Dates: |
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| Volume: | 12 | |||||||||
| Number: | 40 | |||||||||
| Page Range: | pp. 25822-25832 | |||||||||
| DOI: | 10.1039/D2RA04456K | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 17 October 2022 | |||||||||
| Date of first compliant Open Access: | 18 October 2022 | |||||||||
| RIOXX Funder/Project Grant: |
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