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Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather

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 1950s–1980s. During the last 30 years, the interest towards AAMs has been reinvigorated due to the potentia...

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Autores principales: Luukkonen, Tero, Yliniemi, Juho, Walkley, Brant, Geddes, Daniel, Griffith, Ben, Hanna, John V., Provis, John L., Kinnunen, Paivo, Illikainen, Mirja
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9465636/
https://www.ncbi.nlm.nih.gov/pubmed/36199609
http://dx.doi.org/10.1039/d2ra04456k
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author Luukkonen, Tero
Yliniemi, Juho
Walkley, Brant
Geddes, Daniel
Griffith, Ben
Hanna, John V.
Provis, John L.
Kinnunen, Paivo
Illikainen, Mirja
author_facet Luukkonen, Tero
Yliniemi, Juho
Walkley, Brant
Geddes, Daniel
Griffith, Ben
Hanna, John V.
Provis, John L.
Kinnunen, Paivo
Illikainen, Mirja
author_sort Luukkonen, Tero
collection PubMed
description 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 1950s–1980s. During the last 30 years, the interest towards AAMs has been reinvigorated due to the potentially lower CO(2) 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.
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spelling pubmed-94656362022-10-04 Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather Luukkonen, Tero Yliniemi, Juho Walkley, Brant Geddes, Daniel Griffith, Ben Hanna, John V. Provis, John L. Kinnunen, Paivo Illikainen, Mirja RSC Adv Chemistry 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 1950s–1980s. During the last 30 years, the interest towards AAMs has been reinvigorated due to the potentially lower CO(2) 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. The Royal Society of Chemistry 2022-09-12 /pmc/articles/PMC9465636/ /pubmed/36199609 http://dx.doi.org/10.1039/d2ra04456k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Luukkonen, Tero
Yliniemi, Juho
Walkley, Brant
Geddes, Daniel
Griffith, Ben
Hanna, John V.
Provis, John L.
Kinnunen, Paivo
Illikainen, Mirja
Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather
title Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather
title_full Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather
title_fullStr Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather
title_full_unstemmed Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather
title_short Characterization of an aged alkali-activated slag roof tile after 30 years of exposure to Northern Scandinavian weather
title_sort characterization of an aged alkali-activated slag roof tile after 30 years of exposure to northern scandinavian weather
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9465636/
https://www.ncbi.nlm.nih.gov/pubmed/36199609
http://dx.doi.org/10.1039/d2ra04456k
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