Moisture-absorbing expansion and cracking characteristics of central Sichuan red-bed mudstone based on digital speckle correlation method
文献类型：期刊论文
| 作者 | Huang, Kang2,3; Dai, Zhangjun2; Huang, Shuling3; Yu, Fei2; Li, Shichang2; Tong, Kaiwen2; Zhang, Wei1,2; Chen, Shanxiong2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
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| 出版日期 | 2025 |
| 卷号 | 84期号:1页码:17 |
| 关键词 | Red-bed mudstone Digital speckle correlation method Moisture absorption Expansion Crack Deformation mechanism |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-024-04056-3 |
| 英文摘要 | Using self-absorption tests combined with the digital speckle correlation method (DSCM), we investigated the evolution of the deformation field, expansion anisotropy, full-field strain, crack development, and deformation mechanisms in mudstone. During the early moisture-absorbing stage, the displacement field was uneven, accompanied by crack initiation and propagation. By the end of moisture absorption, the horizontal displacement exhibited an approximately 45 degrees zonal pattern along the x-axis, while vertical displacement showed a horizontal zonal distribution. The anisotropy degree of the expansion rate over time mirrored the water absorption curve of mudstone. A three-piecewise linear model was developed to fit the relationship between expansion rate anisotropy and water absorption. Throughout moisture absorption, the average linear strain variation followed the water absorption trend, with the final mean linear strain significantly decreasing as sample height increased. The maximum epsilon xx occurred at the crack tip, and the strain localization band distribution indicated crack development. The maximum epsilon yy aligned with mid-span theory, showing zero vertical displacement. Deformation of mudstone during moisture absorption involved both pore water adsorption and the expansion of clay minerals within the matrix. This study introduces a novel method for examining the hygroscopic expansion and cracking behavior of red-bed mudstone, providing crucial insights into disaster mechanisms and engineering stability in red-bed regions. |
| 资助项目 | National Natural Science Foundation of China[U2340229] ; National Natural Science Foundation of China[42172308] ; Youth Innovation Promotion Association CAS[2022331] ; Innovation Team of Chang jiang River Scientific Research Institute[CKSF2021715/YT] ; Key Research and Development Program of Hubei Province[2022BAA036] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001393548700003 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37876]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Dai, Zhangjun |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Changjiang River Sci Res Inst, Key Lab Geotech Mech & Engn, Minist Water Resources, Wuhan 430010, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Kang,Dai, Zhangjun,Huang, Shuling,et al. Moisture-absorbing expansion and cracking characteristics of central Sichuan red-bed mudstone based on digital speckle correlation method[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2025,84(1):17. |
| APA | Huang, Kang.,Dai, Zhangjun.,Huang, Shuling.,Yu, Fei.,Li, Shichang.,...&Chen, Shanxiong.(2025).Moisture-absorbing expansion and cracking characteristics of central Sichuan red-bed mudstone based on digital speckle correlation method.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,84(1),17. |
| MLA | Huang, Kang,et al."Moisture-absorbing expansion and cracking characteristics of central Sichuan red-bed mudstone based on digital speckle correlation method".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 84.1(2025):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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