Evolution of microscopic pore structure and deterioration mechanism of sandstone subjected to freeze-thaw cycles
文献类型：期刊论文
| 作者 | Zhang, Junyue3; Wang, Guibin1,4; Ma, Changkun1,4; Liu, Huandui1,4; Yang, Mengmeng2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 83期号:10页码:19 |
| 关键词 | Freeze-thaw cycles Pore structure Pore water redistribution Mechanism of freeze-thaw damage Water migration Pore shielding effect |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-024-03901-9 |
| 英文摘要 | Rock pores crack and expand subjected to freeze-thaw cycles, resulting in the reduction of their physical and mechanical properties, it is necessary to study its evolution and deterioration mechanism. However, the majority of existing studies employ a singular pore testing methodology, and neglecting the impact of the thawing process on frost heave damage in rocks. To address this, this study employs a combination of non-destructive testing techniques, including nuclear magnetic resonance (NMR) and computed tomography (CT) scanning, to comprehensively analyze the evolution of pores during freeze-thaw cycles. Investigating the migration and redistribution of pore water and its effect on frost heave damage in sandstone during the freeze-thaw process. Finally, the study examines the mechanisms of pores frost heave initiation and propagation in sandstone during freeze-thaw cycles. The results demonstrate that freeze-thaw cycles result in an expansion of pore volume at all scales within the samples. However, the degree of expansion varies, with macropores, mesopores, and micropores exhibiting a less pronounced increase in sequence. During the freeze-thaw process, water in sandstone pores redistributes, moving from larger to smaller pores. The saturation of water increases in micropores, but decreases in mesopores and macropores, thereby rendering micropores more susceptible to frost heave initiation in subsequent freeze-thaw cycles. With repeated freeze-thaw, the expansion of rock pores will continue in the direction of the lowest tensile strength, eventually forming macroscopic cracks. This study provides valuable insights into the mechanisms of freeze-thaw disaster genesis in rock masses. |
| 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:001312709000002 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42537]  |
| 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,Ma, Changkun,et al. Evolution of microscopic pore structure and deterioration mechanism of sandstone subjected to freeze-thaw cycles[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2024,83(10):19. |
| APA | Zhang, Junyue,Wang, Guibin,Ma, Changkun,Liu, Huandui,&Yang, Mengmeng.(2024).Evolution of microscopic pore structure and deterioration mechanism of sandstone subjected to freeze-thaw cycles.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,83(10),19. |
| MLA | Zhang, Junyue,et al."Evolution of microscopic pore structure and deterioration mechanism of sandstone subjected to freeze-thaw cycles".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 83.10(2024):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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