Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions
Abstract In the framework of sustainable development and environmental preservation, this research aims to improve the stability and frost resistance of sulfate saline soil by utilizing industrial solid waste. Geopolymer materials containing fly ash (FA) activated by different NaOH concentrations we...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-024-82628-9 |
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| author | Sining Li Yong Huang Jian Sun Qiushuang Cui Rui Yu Yubin Liu |
| author_facet | Sining Li Yong Huang Jian Sun Qiushuang Cui Rui Yu Yubin Liu |
| author_sort | Sining Li |
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| description | Abstract In the framework of sustainable development and environmental preservation, this research aims to improve the stability and frost resistance of sulfate saline soil by utilizing industrial solid waste. Geopolymer materials containing fly ash (FA) activated by different NaOH concentrations were studied for study on stabilized soil with saline soil, with NaOH concentrations used ranged from 0.1 to 0.9. This study investigates the impact of the molar concentration of NaOH and the number of freeze-thaw cycles on the microstructure and strength of stabilized soil incorporating FA geopolymer. The XRD, FTIR, and TG studies of NaOH-excited FA stabilized soil revealed that the FA gel material grew with increasing concentration. The strength and frost resistance of stabilized soil increased and then declined as NaOH concentration increased, with an optimum excitation concentration of 0.5 M. After 28 days of curing at 20 °C, its UCS and splitting strength were 7.18 MPa and 1.89 MPa, respectively. The residual values of UCS and splitting strength after 5 freeze-thaw cycles (12 hours of freezing followed by 12 hours of thawing at +20 °C) at the optimal concentration were 46.35% and 39.92%, respectively. |
| format | Article |
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| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-0e6551aa1e1a474ea8a72bfe23deff372025-01-05T12:20:16ZengNature PortfolioScientific Reports2045-23222025-01-0115111610.1038/s41598-024-82628-9Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regionsSining Li0Yong Huang1Jian Sun2Qiushuang Cui3Rui Yu4Yubin Liu5State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang UniversityState Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang UniversityDepartment of Automobile Road Construction and Maintenance, Kharkiv National Automobile and Highway UniversityState Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang UniversitySunwoda Electronic Co., LtdCollege of Civil Engineering and Architecture, Xinjiang UniversityAbstract In the framework of sustainable development and environmental preservation, this research aims to improve the stability and frost resistance of sulfate saline soil by utilizing industrial solid waste. Geopolymer materials containing fly ash (FA) activated by different NaOH concentrations were studied for study on stabilized soil with saline soil, with NaOH concentrations used ranged from 0.1 to 0.9. This study investigates the impact of the molar concentration of NaOH and the number of freeze-thaw cycles on the microstructure and strength of stabilized soil incorporating FA geopolymer. The XRD, FTIR, and TG studies of NaOH-excited FA stabilized soil revealed that the FA gel material grew with increasing concentration. The strength and frost resistance of stabilized soil increased and then declined as NaOH concentration increased, with an optimum excitation concentration of 0.5 M. After 28 days of curing at 20 °C, its UCS and splitting strength were 7.18 MPa and 1.89 MPa, respectively. The residual values of UCS and splitting strength after 5 freeze-thaw cycles (12 hours of freezing followed by 12 hours of thawing at +20 °C) at the optimal concentration were 46.35% and 39.92%, respectively.https://doi.org/10.1038/s41598-024-82628-9Alkali concentrationActivated cementitious materialsHydration mechanism analysisStabilized saline soilUnconfined compressive strengthFreeze-thaw cycles |
| spellingShingle | Sining Li Yong Huang Jian Sun Qiushuang Cui Rui Yu Yubin Liu Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions Scientific Reports Alkali concentration Activated cementitious materials Hydration mechanism analysis Stabilized saline soil Unconfined compressive strength Freeze-thaw cycles |
| title | Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions |
| title_full | Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions |
| title_fullStr | Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions |
| title_full_unstemmed | Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions |
| title_short | Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions |
| title_sort | mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions |
| topic | Alkali concentration Activated cementitious materials Hydration mechanism analysis Stabilized saline soil Unconfined compressive strength Freeze-thaw cycles |
| url | https://doi.org/10.1038/s41598-024-82628-9 |
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