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Strength Development and Erosive Deterioration of Solidified Soil Exposed to Salty Soil
https://orcid.org/https://orcid.org/0000-0003-3590-5929
https://orcid.org/https://orcid.org/0009-0006-8791-5837
https://orcid.org/https://orcid.org/0009-0002-5623-5063
https://orcid.org/https://orcid.org/0009-0004-8747-0220
https://orcid.org/https://orcid.org/0009-0009-9354-1298
To reveal the impact of erosion environment and age on the strength and deterioration of solidified soil exposed to salty soil, two types of solidified soil, soda residue-ground granulated blast furnace slag-carbide slag solidified soil (S20G10) and cement solidified soil (C10), were eroded by salty soil prepared with kaolin mixed with Na2SO4, MgSO4 or seawater. The unconfined compressive strength tests, X-ray diffraction and scanning electron microscopy analysis were conducted. The results showed that 1% MgSO4 erosion resulted in the most significant reduction in strength. After 28 days of erosion, the strength was approximately 66% to 68% of the standard curing sample. The strength initially increased and then decreased with the erosion age. Numerous needle-like ettringite or thamuasite were generated in the samples, which led to a loose microstructure and decrease in strength. Sample S20G10 showed stronger erosion resistance than sample C10. The bearing capacity of solidified soil exposed to MgSO4 erosion exhibited an initial increase followed by a decrease with erosion age. When considering erosion deterioration for 50 years, it was necessary to increase the pile diameter by 1.1 to 1.7 times if the bearing capacity of the mixing pile was equal to the allowable bearing capacity.
Strength Development and Erosive Deterioration of Solidified Soil Exposed to Salty Soil
https://orcid.org/https://orcid.org/0000-0003-3590-5929
https://orcid.org/https://orcid.org/0009-0006-8791-5837
https://orcid.org/https://orcid.org/0009-0002-5623-5063
https://orcid.org/https://orcid.org/0009-0004-8747-0220
https://orcid.org/https://orcid.org/0009-0009-9354-1298
To reveal the impact of erosion environment and age on the strength and deterioration of solidified soil exposed to salty soil, two types of solidified soil, soda residue-ground granulated blast furnace slag-carbide slag solidified soil (S20G10) and cement solidified soil (C10), were eroded by salty soil prepared with kaolin mixed with Na2SO4, MgSO4 or seawater. The unconfined compressive strength tests, X-ray diffraction and scanning electron microscopy analysis were conducted. The results showed that 1% MgSO4 erosion resulted in the most significant reduction in strength. After 28 days of erosion, the strength was approximately 66% to 68% of the standard curing sample. The strength initially increased and then decreased with the erosion age. Numerous needle-like ettringite or thamuasite were generated in the samples, which led to a loose microstructure and decrease in strength. Sample S20G10 showed stronger erosion resistance than sample C10. The bearing capacity of solidified soil exposed to MgSO4 erosion exhibited an initial increase followed by a decrease with erosion age. When considering erosion deterioration for 50 years, it was necessary to increase the pile diameter by 1.1 to 1.7 times if the bearing capacity of the mixing pile was equal to the allowable bearing capacity.
Strength Development and Erosive Deterioration of Solidified Soil Exposed to Salty Soil
https://orcid.org/https://orcid.org/0000-0003-3590-5929
https://orcid.org/https://orcid.org/0009-0006-8791-5837
https://orcid.org/https://orcid.org/0009-0002-5623-5063
https://orcid.org/https://orcid.org/0009-0004-8747-0220
https://orcid.org/https://orcid.org/0009-0009-9354-1298
To reveal the impact of erosion environment and age on the strength and deterioration of solidified soil exposed to salty soil, two types of solidified soil, soda residue-ground granulated blast furnace slag-carbide slag solidified soil (S20G10) and cement solidified soil (C10), were eroded by salty soil prepared with kaolin mixed with Na2SO4, MgSO4 or seawater. The unconfined compressive strength tests, X-ray diffraction and scanning electron microscopy analysis were conducted. The results showed that 1% MgSO4 erosion resulted in the most significant reduction in strength. After 28 days of erosion, the strength was approximately 66% to 68% of the standard curing sample. The strength initially increased and then decreased with the erosion age. Numerous needle-like ettringite or thamuasite were generated in the samples, which led to a loose microstructure and decrease in strength. Sample S20G10 showed stronger erosion resistance than sample C10. The bearing capacity of solidified soil exposed to MgSO4 erosion exhibited an initial increase followed by a decrease with erosion age. When considering erosion deterioration for 50 years, it was necessary to increase the pile diameter by 1.1 to 1.7 times if the bearing capacity of the mixing pile was equal to the allowable bearing capacity.
Strength Development and Erosive Deterioration of Solidified Soil Exposed to Salty Soil
KSCE J Civ Eng
He, Jun (author) / Long, Sihao (author) / Zhu, Yuanjun (author) / Luo, Shiru (author) / Li, Wenjing (author)
KSCE Journal of Civil Engineering ; 28 ; 4853-4864
2024-11-01
12 pages
Article (Journal)
Electronic Resource
English
Strength Development and Erosive Deterioration of Solidified Soil Exposed to Salty Soil
| Springer Verlag | 2024
| British Library Conference Proceedings | 1996
| European Patent Office | 2024