Study on the evolution of microscopic pore structure of sandstone under freeze-thaw cycles
文献类型：期刊论文
| 作者 | Zhang, Junyue3; Wang, Guibin1,4; Liu, Huandui1,4; Yang, Mengmeng2 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2024 |
| 卷号 | 217页码:12 |
| 关键词 | Freeze-thaw cycles micro morphology Pore structure evolution Complete pore size distribution Multifractal analysis |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2023.104018 |
| 英文摘要 | In cold regions, rocks undergo freeze-thaw (FT) cycles, leading to damage caused by the evolution of pores. This phenomenon significantly influences the rock mass stability. A comprehensive and accurate study of FT damage evolution in rock pores was conducted in this research. The microscopic morphology and pore size distribution (PSD) of sandstone samples subjected to FT cycles were measured utilizing scanning electron microscopy (SEM), nitrogen adsorption/desorption (NAD) method, and mercury intrusion porosimetry (MIP). Multifractal analysis was applied to explore the evolution of PSD. A gradual weakening of the cementation degree of mineral particles under FT cycles was observed based on SEM results, resulting in the formation of larger connected pores. A decrease of 37.3% in the number of pores was recorded after 40 cycles. According to NAD and MIP results, a greater effect on mesopores and large pores were found, with a minimal impact on micropores and transition pores. Multifractal characteristics were identified in the PSD of sandstone samples with different FT cycles. Initially, the connectivity of sandstone pores was found to decrease and then increase gradually after 10 cycles. Uneven PSD was observed to concentrate stress among pores, exacerbate frost heave damage, and drive the PSD towards a more uniform direction. It was concluded that the non-uniform degree of PSD does not consistently increase with FT cycles. The findings of this study can serve as a reference for further research on rock FT damage mechanisms. |
| 资助项目 | National Key Research and Development Program of China[2018YFC0808401] ; National Key Research and Development Program of China[2018YFC0808402] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001085272700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39698]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Junyue |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Taiyuan Univ Technol, Coll Safety & Emergency Management Engn, Taiyuan 030024, Peoples R China 3.Chongqing Univ, Sch Resources & Safety Engn, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Environm Geotechnol, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Junyue,Wang, Guibin,Liu, Huandui,et al. Study on the evolution of microscopic pore structure of sandstone under freeze-thaw cycles[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2024,217:12. |
| APA | Zhang, Junyue,Wang, Guibin,Liu, Huandui,&Yang, Mengmeng.(2024).Study on the evolution of microscopic pore structure of sandstone under freeze-thaw cycles.COLD REGIONS SCIENCE AND TECHNOLOGY,217,12. |
| MLA | Zhang, Junyue,et al."Study on the evolution of microscopic pore structure of sandstone under freeze-thaw cycles".COLD REGIONS SCIENCE AND TECHNOLOGY 217(2024):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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