Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand
This study delves into the mechanical properties and mechanisms of bentonite-modified cement soil, a reinforced material formed through the physicochemical reactions of cement, soil, and water. Recognizing the material’s widespread application in foundation treatment, slope reinforcement, and seepag...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Soils and Foundations |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080625000071 |
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| _version_ | 1832087668346847232 |
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| author | Zheyuan Feng Zhibo Zhang Qiang Tang Yu Zhou |
| author_facet | Zheyuan Feng Zhibo Zhang Qiang Tang Yu Zhou |
| author_sort | Zheyuan Feng |
| collection | DOAJ |
| description | This study delves into the mechanical properties and mechanisms of bentonite-modified cement soil, a reinforced material formed through the physicochemical reactions of cement, soil, and water. Recognizing the material’s widespread application in foundation treatment, slope reinforcement, and seepage control, alongside the environmental pressures of cement production, this research explores the potential of bentonite as a partial cement substitute. Through indoor unconfined compressive strength and permeability tests, varied by curing age, bentonite type, and mix ratio, the study assesses the impact of these factors on the material’s performance. Microscopic analyses further elucidate the intrinsic mechanisms at play. Key findings include: a non-linear relationship between bentonite content and modified cement soil strength, with sodium-based bentonite enhancing strength more effectively than calcium-based; a significant reduction in permeability coefficient with increased bentonite content, particularly with sodium-based bentonite; and a detailed examination of the material’s microstructure, revealing the critical role of cement and bentonite content in pore reduction and strength enhancement. The study underscores the paramount influence of cement content on both strength and permeability, proposing a prioritized framework for optimizing modified cement soil’s performance. |
| format | Article |
| id | doaj-art-1cfc243fabb440a4a212cff127798bfc |
| institution | Kabale University |
| issn | 2524-1788 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj-art-1cfc243fabb440a4a212cff127798bfc2025-02-06T05:10:55ZengElsevierSoils and Foundations2524-17882025-03-01652101573Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sandZheyuan Feng0Zhibo Zhang1Qiang Tang2Yu Zhou3School of Rail Transportation, Soochow University, Suzhou 215131 China; State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007 Jiangsu, ChinaSchool of Rail Transportation, Soochow University, Suzhou 215131 ChinaSchool of Rail Transportation, Soochow University, Suzhou 215131 China; Corresponding author.School of Rail Transportation, Soochow University, Suzhou 215131 ChinaThis study delves into the mechanical properties and mechanisms of bentonite-modified cement soil, a reinforced material formed through the physicochemical reactions of cement, soil, and water. Recognizing the material’s widespread application in foundation treatment, slope reinforcement, and seepage control, alongside the environmental pressures of cement production, this research explores the potential of bentonite as a partial cement substitute. Through indoor unconfined compressive strength and permeability tests, varied by curing age, bentonite type, and mix ratio, the study assesses the impact of these factors on the material’s performance. Microscopic analyses further elucidate the intrinsic mechanisms at play. Key findings include: a non-linear relationship between bentonite content and modified cement soil strength, with sodium-based bentonite enhancing strength more effectively than calcium-based; a significant reduction in permeability coefficient with increased bentonite content, particularly with sodium-based bentonite; and a detailed examination of the material’s microstructure, revealing the critical role of cement and bentonite content in pore reduction and strength enhancement. The study underscores the paramount influence of cement content on both strength and permeability, proposing a prioritized framework for optimizing modified cement soil’s performance.http://www.sciencedirect.com/science/article/pii/S0038080625000071BentoniteCementCorrelation analysisUnconfined compression strengthPermeability characteristics |
| spellingShingle | Zheyuan Feng Zhibo Zhang Qiang Tang Yu Zhou Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand Soils and Foundations Bentonite Cement Correlation analysis Unconfined compression strength Permeability characteristics |
| title | Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand |
| title_full | Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand |
| title_fullStr | Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand |
| title_full_unstemmed | Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand |
| title_short | Mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand |
| title_sort | mechanical properties and microscopic research of different types of bentonite in conjunction with cement and fine sand |
| topic | Bentonite Cement Correlation analysis Unconfined compression strength Permeability characteristics |
| url | http://www.sciencedirect.com/science/article/pii/S0038080625000071 |
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