Effect of freeze-thaw cycles on mechanical performance of loess soil stabilized with nano magnesium oxide DOI Creative Commons
Peng Hu, Shufeng Chen, Zhao Duan

et al.

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(4), P. e0319909 - e0319909

Published: April 29, 2025

Construction in northwest China is generally packed with issues linked to loess soil poor engineering properties and day-night seasonal freeze-thaw (FT) actions. This study explored the potential benefits of nano-MgO (NM) as an innovative solution for improving mechanical loess. To this end, a series unconfined compression test (UCT) nuclear magnetic resonance tests (NMRT) were conducted. Results showed that compressive strength (UCS) exhibited “rise-fall” trend addition NM. An optimum dosage 2% NM expected bring about 71.9% 143.5% gain non-FT FT samples, respectively. Meanwhile, FT-induced reduction ratio decreased from 56.3% 38.1% content 0 2%. These illustrated can be very effective performance alleviating damage. On other hand, deformation modulus presented similar trends UCS, while failure strain behaved reverse way. Accordingly, empirical models well its relationships strain, established validated by literature data. Furthermore, revealed adding could increase proportion bound water intensive interaction, yielding improved durability. investigation shows represents alternative cement stabilization, provides scientific support construction design cold regions.

Language: Английский

Effect of freeze-thaw cycles on mechanical performance of loess soil stabilized with nano magnesium oxide DOI Creative Commons
Peng Hu, Shufeng Chen, Zhao Duan

et al.

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(4), P. e0319909 - e0319909

Published: April 29, 2025

Construction in northwest China is generally packed with issues linked to loess soil poor engineering properties and day-night seasonal freeze-thaw (FT) actions. This study explored the potential benefits of nano-MgO (NM) as an innovative solution for improving mechanical loess. To this end, a series unconfined compression test (UCT) nuclear magnetic resonance tests (NMRT) were conducted. Results showed that compressive strength (UCS) exhibited “rise-fall” trend addition NM. An optimum dosage 2% NM expected bring about 71.9% 143.5% gain non-FT FT samples, respectively. Meanwhile, FT-induced reduction ratio decreased from 56.3% 38.1% content 0 2%. These illustrated can be very effective performance alleviating damage. On other hand, deformation modulus presented similar trends UCS, while failure strain behaved reverse way. Accordingly, empirical models well its relationships strain, established validated by literature data. Furthermore, revealed adding could increase proportion bound water intensive interaction, yielding improved durability. investigation shows represents alternative cement stabilization, provides scientific support construction design cold regions.

Language: Английский

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