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Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes
This study explored unprocessed high-carbon biomass fly ash (BFA) in alkali-activated materials (AAM) with less alkaline Na(2)CO(3) as the activator. In this paper, the effects of the Na(2)CO(3)/Na(2)SiO(3) (C/S) ratio and curing temperature (40 °C and 20 °C) on the setting time, structure formation...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9741012/ https://www.ncbi.nlm.nih.gov/pubmed/36499849 http://dx.doi.org/10.3390/ma15238354 |
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author | Zhu, Chengjie Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas |
author_facet | Zhu, Chengjie Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas |
author_sort | Zhu, Chengjie |
collection | PubMed |
description | This study explored unprocessed high-carbon biomass fly ash (BFA) in alkali-activated materials (AAM) with less alkaline Na(2)CO(3) as the activator. In this paper, the effects of the Na(2)CO(3)/Na(2)SiO(3) (C/S) ratio and curing temperature (40 °C and 20 °C) on the setting time, structure formation, product synthesis, and physical-mechanical properties of alkali-activated BFA pastes were systematically investigated. Regardless of curing temperature, increasing the C/S ratio increased the density and compressive strength of the sample while a decrease in water absorption. The higher the curing temperature, the faster the structure evolution during the BFA-based alkaline activation synthesis process and the higher the sample’s compressive strength. According to XRD and TG/DTA analyses, the synthesis of gaylussite and C-S-H were observed in the sample with an increasing C/S ratio. The formation of the mentioned minerals contributes to the compressive strength growth of alkali-activated BFA pastes with higher C/S ratios. The findings of this study contribute to the applicability of difficult-to-recycle waste materials such as BFA and the development of sustainable BFA-based AAM. |
format | Online Article Text |
id | pubmed-9741012 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-97410122022-12-11 Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes Zhu, Chengjie Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas Materials (Basel) Article This study explored unprocessed high-carbon biomass fly ash (BFA) in alkali-activated materials (AAM) with less alkaline Na(2)CO(3) as the activator. In this paper, the effects of the Na(2)CO(3)/Na(2)SiO(3) (C/S) ratio and curing temperature (40 °C and 20 °C) on the setting time, structure formation, product synthesis, and physical-mechanical properties of alkali-activated BFA pastes were systematically investigated. Regardless of curing temperature, increasing the C/S ratio increased the density and compressive strength of the sample while a decrease in water absorption. The higher the curing temperature, the faster the structure evolution during the BFA-based alkaline activation synthesis process and the higher the sample’s compressive strength. According to XRD and TG/DTA analyses, the synthesis of gaylussite and C-S-H were observed in the sample with an increasing C/S ratio. The formation of the mentioned minerals contributes to the compressive strength growth of alkali-activated BFA pastes with higher C/S ratios. The findings of this study contribute to the applicability of difficult-to-recycle waste materials such as BFA and the development of sustainable BFA-based AAM. MDPI 2022-11-24 /pmc/articles/PMC9741012/ /pubmed/36499849 http://dx.doi.org/10.3390/ma15238354 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhu, Chengjie Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes |
title | Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes |
title_full | Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes |
title_fullStr | Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes |
title_full_unstemmed | Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes |
title_short | Effects of Na(2)CO(3)/Na(2)SiO(3) Ratio and Curing Temperature on the Structure Formation of Alkali-Activated High-Carbon Biomass Fly Ash Pastes |
title_sort | effects of na(2)co(3)/na(2)sio(3) ratio and curing temperature on the structure formation of alkali-activated high-carbon biomass fly ash pastes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9741012/ https://www.ncbi.nlm.nih.gov/pubmed/36499849 http://dx.doi.org/10.3390/ma15238354 |
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