Role of substrate roughness in soil desiccation cracking
文献类型：期刊论文
| 作者 | Yang, Yuhan2; Zhang, Chao3; Gou, Lingyun2; Chen, Renpeng1; Dong, Yi4 |
| 刊名 | CANADIAN GEOTECHNICAL JOURNAL
 |
| 出版日期 | 2024-09-18 |
| 页码 | 18 |
| 关键词 | desiccation cracking clayey soil 3D printing crack propagation substrate roughness |
| ISSN号 | 0008-3674 |
| DOI | 10.1139/cgj-2023-0638 |
| 英文摘要 | Soil desiccation crack is ubiquitous in nature, yet the physics of its initiation and propagation remain under debate, as it involves complex interactions across multiple fields of mechanics, hydraulics, and thermals. Here, an experimental attempt is made to uncover the role of substrate roughness on the soil desiccation process. The substrate roughness is deliberately fabricated by 3D printing, whereas the thickness of sample and environmental humidity are controlled to eliminate the effect of large hydraulic gradient. Four types of soils with varying expansibilities were desiccated on substrates with varying roughness. It reveals that (1) soil desiccation crack evolution can be conceived as a competing process between the shear failure of soil-substrate interface, i.e., slippage of interface, and the tensile failure of soil, i.e., crack initiation, in minimizing the total energy of drying soil; (2) substrate roughness alters the failure mode and shear strength of soil-substrate interface and its sensitivity to moisture, thereby it regulates the pattern of how soil crack propagates upon drying; and (3) soil expansibility is recognized as a key factor governing the crack initiation in addition to the widely recognized air entry, and flaws in soil are the sources for the 120(degrees) crack angle and bimodal crack angle distribution. |
| 资助项目 | National Natural Science Foundation of China[52078208] ; National Natural Science Foundation of China[52090083] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001316266500001 |
| 出版者 | CANADIAN SCIENCE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42546]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Chao |
| 作者单位 | 1.Hunan Univ, Res Ctr Adv Underground Space Technol, Changsha 410082, Peoples R China 2.Hunan Univ, Key Lab Bldg Safety & Energy Efficiency, Minist Educ, Changsha 410082, Peoples R China 3.Hunan Univ, Coll Civil Engn, Changsha 410082, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yuhan,Zhang, Chao,Gou, Lingyun,et al. Role of substrate roughness in soil desiccation cracking[J]. CANADIAN GEOTECHNICAL JOURNAL,2024:18. |
| APA | Yang, Yuhan,Zhang, Chao,Gou, Lingyun,Chen, Renpeng,&Dong, Yi.(2024).Role of substrate roughness in soil desiccation cracking.CANADIAN GEOTECHNICAL JOURNAL,18. |
| MLA | Yang, Yuhan,et al."Role of substrate roughness in soil desiccation cracking".CANADIAN GEOTECHNICAL JOURNAL (2024):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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