Experimental study of freeze–thaw resistance of a one-part geopolymer paste
This study was aimed at experimentally evaluating the freeze–thaw (F–T) performance of a one-part geopolymer (OPG) paste. A binary precursor (ground granulated blast furnace slag plus fly ash) activated by sodium hydroxide (NaOH (NH)) or sodium metasilicate (Na2SiO3 (NS)) was used to prepare the OPG...
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ftdoajarticles:oai:doaj.org/article:04c2347ed4944ad5a624a7c4c18119db 2023-05-15T16:29:58+02:00 Experimental study of freeze–thaw resistance of a one-part geopolymer paste Yifan Min Jun Wu Bo Li Maoyu Zhang Jinjin Zhang 2022-12-01T00:00:00Z https://doi.org/10.1016/j.cscm.2022.e01269 https://doaj.org/article/04c2347ed4944ad5a624a7c4c18119db EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2214509522004016 https://doaj.org/toc/2214-5095 2214-5095 doi:10.1016/j.cscm.2022.e01269 https://doaj.org/article/04c2347ed4944ad5a624a7c4c18119db Case Studies in Construction Materials, Vol 17, Iss , Pp e01269- (2022) One-part geopolymer Freeze–thaw Mechanical deterioration Morphological change Hydrate composition Porosity Materials of engineering and construction. Mechanics of materials TA401-492 article 2022 ftdoajarticles https://doi.org/10.1016/j.cscm.2022.e01269 2022-12-30T21:33:24Z This study was aimed at experimentally evaluating the freeze–thaw (F–T) performance of a one-part geopolymer (OPG) paste. A binary precursor (ground granulated blast furnace slag plus fly ash) activated by sodium hydroxide (NaOH (NH)) or sodium metasilicate (Na2SiO3 (NS)) was used to prepare the OPG pastes. To simulate the freezing temperatures in various frozen regions of the world (such as Canada, China, Greenland, Norway, Russia, and the United States), four temperature values were selected: − 5, − 10, − 20, and − 40 °C. The F–T durability of the OPG paste was studied based on the visual appearance, mass loss, pH variation, and compressive strength deterioration under the action of F–T cycles (up to 50 cycles). The experimental results revealed that because of the formation of a dense structure, the NS-activated OPG paste had better F–T resistance than the NH-activated OPG paste. The increase in the number of F–T cycles or decrease in freezing temperature led to an increase in the porosity of the OPG paste, thereby causing mass loss and compressive strength reduction. The increase in porosity was due to the volumetric expansion of ice crystals, and the failure stress was caused by the difference in temperature. These two factors were found to cause the deterioration of the mechanical properties of the OPG paste. Accordingly, a deterioration model of the OPG paste under F–T cycles was proposed based on the experimental observations. The results of this study are expected to provide guidance regarding the use of the novel OPG paste to improve frozen soil layers or build frost-resistant geotechnical structures. Article in Journal/Newspaper Greenland Directory of Open Access Journals: DOAJ Articles Canada Greenland Norway Case Studies in Construction Materials 17 e01269 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
One-part geopolymer Freeze–thaw Mechanical deterioration Morphological change Hydrate composition Porosity Materials of engineering and construction. Mechanics of materials TA401-492 |
spellingShingle |
One-part geopolymer Freeze–thaw Mechanical deterioration Morphological change Hydrate composition Porosity Materials of engineering and construction. Mechanics of materials TA401-492 Yifan Min Jun Wu Bo Li Maoyu Zhang Jinjin Zhang Experimental study of freeze–thaw resistance of a one-part geopolymer paste |
topic_facet |
One-part geopolymer Freeze–thaw Mechanical deterioration Morphological change Hydrate composition Porosity Materials of engineering and construction. Mechanics of materials TA401-492 |
description |
This study was aimed at experimentally evaluating the freeze–thaw (F–T) performance of a one-part geopolymer (OPG) paste. A binary precursor (ground granulated blast furnace slag plus fly ash) activated by sodium hydroxide (NaOH (NH)) or sodium metasilicate (Na2SiO3 (NS)) was used to prepare the OPG pastes. To simulate the freezing temperatures in various frozen regions of the world (such as Canada, China, Greenland, Norway, Russia, and the United States), four temperature values were selected: − 5, − 10, − 20, and − 40 °C. The F–T durability of the OPG paste was studied based on the visual appearance, mass loss, pH variation, and compressive strength deterioration under the action of F–T cycles (up to 50 cycles). The experimental results revealed that because of the formation of a dense structure, the NS-activated OPG paste had better F–T resistance than the NH-activated OPG paste. The increase in the number of F–T cycles or decrease in freezing temperature led to an increase in the porosity of the OPG paste, thereby causing mass loss and compressive strength reduction. The increase in porosity was due to the volumetric expansion of ice crystals, and the failure stress was caused by the difference in temperature. These two factors were found to cause the deterioration of the mechanical properties of the OPG paste. Accordingly, a deterioration model of the OPG paste under F–T cycles was proposed based on the experimental observations. The results of this study are expected to provide guidance regarding the use of the novel OPG paste to improve frozen soil layers or build frost-resistant geotechnical structures. |
format |
Article in Journal/Newspaper |
author |
Yifan Min Jun Wu Bo Li Maoyu Zhang Jinjin Zhang |
author_facet |
Yifan Min Jun Wu Bo Li Maoyu Zhang Jinjin Zhang |
author_sort |
Yifan Min |
title |
Experimental study of freeze–thaw resistance of a one-part geopolymer paste |
title_short |
Experimental study of freeze–thaw resistance of a one-part geopolymer paste |
title_full |
Experimental study of freeze–thaw resistance of a one-part geopolymer paste |
title_fullStr |
Experimental study of freeze–thaw resistance of a one-part geopolymer paste |
title_full_unstemmed |
Experimental study of freeze–thaw resistance of a one-part geopolymer paste |
title_sort |
experimental study of freeze–thaw resistance of a one-part geopolymer paste |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.cscm.2022.e01269 https://doaj.org/article/04c2347ed4944ad5a624a7c4c18119db |
geographic |
Canada Greenland Norway |
geographic_facet |
Canada Greenland Norway |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Case Studies in Construction Materials, Vol 17, Iss , Pp e01269- (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2214509522004016 https://doaj.org/toc/2214-5095 2214-5095 doi:10.1016/j.cscm.2022.e01269 https://doaj.org/article/04c2347ed4944ad5a624a7c4c18119db |
op_doi |
https://doi.org/10.1016/j.cscm.2022.e01269 |
container_title |
Case Studies in Construction Materials |
container_volume |
17 |
container_start_page |
e01269 |
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1766019685600460800 |