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Long-Term Behavior and Durability of Alkali-Activated Clay Mortars
The need to increase the durability of clay-based materials, due to their inherent low strength and vulnerability in contact with water, led researchers to examine different options. In this paper, clay mortars were produced using four different activating solutions. Alkali hydroxides, alkali carbon...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503674/ https://www.ncbi.nlm.nih.gov/pubmed/32867348 http://dx.doi.org/10.3390/ma13173790 |
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author | Karozou, Aspasia Konopisi, Stavroula Pavlidou, Eleni Stefanidou, Maria |
author_facet | Karozou, Aspasia Konopisi, Stavroula Pavlidou, Eleni Stefanidou, Maria |
author_sort | Karozou, Aspasia |
collection | PubMed |
description | The need to increase the durability of clay-based materials, due to their inherent low strength and vulnerability in contact with water, led researchers to examine different options. In this paper, clay mortars were produced using four different activating solutions. Alkali hydroxides, alkali carbonates, and alkali silicates activating solutions were used. Interest is given to long term properties while their behavior to wetting–drying and freeze–thaw cycles is recorded. In total, the results of the experiments indicated the positive effect of the potassium metasilicate on mechanical characteristics presenting, however, low performance at wetting–drying. The combination of sodium metasilicate with sodium hydroxide solution has also presented a positive effect on both mechanical and physical properties. In contrast, sodium carbonate acted better in enhancing physical properties and granting water-resistant abilities. Moreover, the performance of the specimens mixed with water–glass addition presented excellent volume stability and low mass loss in durability tests. |
format | Online Article Text |
id | pubmed-7503674 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75036742020-09-27 Long-Term Behavior and Durability of Alkali-Activated Clay Mortars Karozou, Aspasia Konopisi, Stavroula Pavlidou, Eleni Stefanidou, Maria Materials (Basel) Article The need to increase the durability of clay-based materials, due to their inherent low strength and vulnerability in contact with water, led researchers to examine different options. In this paper, clay mortars were produced using four different activating solutions. Alkali hydroxides, alkali carbonates, and alkali silicates activating solutions were used. Interest is given to long term properties while their behavior to wetting–drying and freeze–thaw cycles is recorded. In total, the results of the experiments indicated the positive effect of the potassium metasilicate on mechanical characteristics presenting, however, low performance at wetting–drying. The combination of sodium metasilicate with sodium hydroxide solution has also presented a positive effect on both mechanical and physical properties. In contrast, sodium carbonate acted better in enhancing physical properties and granting water-resistant abilities. Moreover, the performance of the specimens mixed with water–glass addition presented excellent volume stability and low mass loss in durability tests. MDPI 2020-08-27 /pmc/articles/PMC7503674/ /pubmed/32867348 http://dx.doi.org/10.3390/ma13173790 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Karozou, Aspasia Konopisi, Stavroula Pavlidou, Eleni Stefanidou, Maria Long-Term Behavior and Durability of Alkali-Activated Clay Mortars |
title | Long-Term Behavior and Durability of Alkali-Activated Clay Mortars |
title_full | Long-Term Behavior and Durability of Alkali-Activated Clay Mortars |
title_fullStr | Long-Term Behavior and Durability of Alkali-Activated Clay Mortars |
title_full_unstemmed | Long-Term Behavior and Durability of Alkali-Activated Clay Mortars |
title_short | Long-Term Behavior and Durability of Alkali-Activated Clay Mortars |
title_sort | long-term behavior and durability of alkali-activated clay mortars |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7503674/ https://www.ncbi.nlm.nih.gov/pubmed/32867348 http://dx.doi.org/10.3390/ma13173790 |
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