Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of Sandstone
The sandstone from the dry to saturated state shows obvious deterioration characteristics. Taking the sandstone of a slope in the Three Gorges Reservoir area as the research object, uniaxial/triaxial compression of sandstone samples with different water-bearing states (dry, natural, and saturated) i...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/4850650 |
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| author | Zuosen. Luo Zuoxiang. Zhu Hao Bai Daxiang Liu Qiancheng. Sun |
| author_facet | Zuosen. Luo Zuoxiang. Zhu Hao Bai Daxiang Liu Qiancheng. Sun |
| author_sort | Zuosen. Luo |
| collection | DOAJ |
| description | The sandstone from the dry to saturated state shows obvious deterioration characteristics. Taking the sandstone of a slope in the Three Gorges Reservoir area as the research object, uniaxial/triaxial compression of sandstone samples with different water-bearing states (dry, natural, and saturated) is carried out to study the changes in macromechanical properties of sandstone under different water-bearing states. Combined with NMR and SEM, the characteristics of microstructure of sandstone under different moisture conditions were studied. The results show that, with the increase of water content, the macromechanical parameters of sandstone gradually decrease, and the fine and microstructure characteristics are characterized by the gradual increase in the number of pores and the gradual increase in pore size. Based on the PFC2D software, considering the weakening effect of water on the partial cementation from a mesoscopic point of view, it is proposed to use soft and hard contacts to simulate the changes in the degree of cementation between particles under different water-bearing conditions and to study the impact of sandstone micromechanical parameters with changes in water content. Related research results can provide theoretical guidance for the stability evaluation of wading rock mass engineering. |
| format | Article |
| id | doaj-art-5653542016214e32bdbb16680e893592 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-5653542016214e32bdbb16680e8935922025-02-03T06:12:20ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/48506504850650Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of SandstoneZuosen. Luo0Zuoxiang. Zhu1Hao Bai2Daxiang Liu3Qiancheng. Sun4Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, ChinaKey Laboratory of Geological Hazards on Three Gorges Reservoir Area of Ministry of Education, China Three Gorges University, Yichang, Hubei 443002, ChinaKey Laboratory of Geological Hazards on Three Gorges Reservoir Area of Ministry of Education, China Three Gorges University, Yichang, Hubei 443002, ChinaEngineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, ChinaKey Laboratory of Geological Hazards on Three Gorges Reservoir Area of Ministry of Education, China Three Gorges University, Yichang, Hubei 443002, ChinaThe sandstone from the dry to saturated state shows obvious deterioration characteristics. Taking the sandstone of a slope in the Three Gorges Reservoir area as the research object, uniaxial/triaxial compression of sandstone samples with different water-bearing states (dry, natural, and saturated) is carried out to study the changes in macromechanical properties of sandstone under different water-bearing states. Combined with NMR and SEM, the characteristics of microstructure of sandstone under different moisture conditions were studied. The results show that, with the increase of water content, the macromechanical parameters of sandstone gradually decrease, and the fine and microstructure characteristics are characterized by the gradual increase in the number of pores and the gradual increase in pore size. Based on the PFC2D software, considering the weakening effect of water on the partial cementation from a mesoscopic point of view, it is proposed to use soft and hard contacts to simulate the changes in the degree of cementation between particles under different water-bearing conditions and to study the impact of sandstone micromechanical parameters with changes in water content. Related research results can provide theoretical guidance for the stability evaluation of wading rock mass engineering.http://dx.doi.org/10.1155/2021/4850650 |
| spellingShingle | Zuosen. Luo Zuoxiang. Zhu Hao Bai Daxiang Liu Qiancheng. Sun Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of Sandstone Shock and Vibration |
| title | Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of Sandstone |
| title_full | Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of Sandstone |
| title_fullStr | Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of Sandstone |
| title_full_unstemmed | Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of Sandstone |
| title_short | Research on the Influence of Moisture Condition on the Mechanical Properties and Microstructure of Sandstone |
| title_sort | research on the influence of moisture condition on the mechanical properties and microstructure of sandstone |
| url | http://dx.doi.org/10.1155/2021/4850650 |
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