3D image visualization of meso-structural changes in a bimsoil under uniaxial compression using X-ray computed tomography (CT)
文献类型：期刊论文
| 作者 | Wang, Y.1; Li, C. H.1; Hu, Y. Z.2 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2019-01-08 |
| 卷号 | 248页码:61-69 |
| 关键词 | Bimsoil Laboratory test X-ray CT Meso-structure Uniaxial compression |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2018.11.004 |
| 英文摘要 | In situ quantification of the meso-structural changes in block-in-matrix-soils (bimsoil) is crucial for stability predictions. While the macroscopic failure of bimsoil has been widely studied, the physical meso-scale mechanisms governing bimsoil deformation have not been well understood. Here, high energy X-ray computed tomography (CT) measurements were performed on a bimsoil sample with a rock block percentage (RBP) of 40% under uniaxial compression to collect three-dimensional data for the sample's meso-damage evolution. The 3D pattern of the sample deformation was imaged in real-time, and meso-structural changes are visualized by the rendered CT images. The data showed that cracks propagated by passing rock blocks, leading to a macroscopic fracture with a well-developed twisting characteristic. The crack rose diagram reveals the propagation path of the cracks, which are mostly parallel to the loading direction. In addition, interlocking occurs during the propagation of cracks, which determined the curved morphology of the fracture plane. Moreover, the fractal 3D digital image analysis quantifies the complexity of the crack distribution with increasing sample deformation. This work demonstrates the strong influence of local mechanical variations due to existing rock blocks on the crack propagation in bimsoil. |
| WOS关键词 | SOIL-ROCK MIXTURE ; SHEAR-STRENGTH ; BEHAVIOR ; BIMROCKS ; MODULUS ; MATRIX |
| 资助项目 | National key technologies Research & Development program[2018YFC0808402] ; National key technologies Research & Development program[2018YFC0604601] ; National key technologies Research & Development program[2017YFC0804103] ; National Natural Science Foundation of China[41502294] ; National Natural Science Foundation of China[41330643] ; Fundamental Research Funds for the Central Universities[2302017FRF-TP-17-027A1] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000458220900006 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National key technologies Research & Development program ; National key technologies Research & Development program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National key technologies Research & Development program ; National key technologies Research & Development program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National key technologies Research & Development program ; National key technologies Research & Development program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National key technologies Research & Development program ; National key technologies Research & Development program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/90497]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Wang, Y. |
| 作者单位 | 1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Dept Civil Engn, Beijing Key Lab Urban Underground Space Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Y.,Li, C. H.,Hu, Y. Z.. 3D image visualization of meso-structural changes in a bimsoil under uniaxial compression using X-ray computed tomography (CT)[J]. ENGINEERING GEOLOGY,2019,248:61-69. |
| APA | Wang, Y.,Li, C. H.,&Hu, Y. Z..(2019).3D image visualization of meso-structural changes in a bimsoil under uniaxial compression using X-ray computed tomography (CT).ENGINEERING GEOLOGY,248,61-69. |
| MLA | Wang, Y.,et al."3D image visualization of meso-structural changes in a bimsoil under uniaxial compression using X-ray computed tomography (CT)".ENGINEERING GEOLOGY 248(2019):61-69. |
入库方式： OAI收割
来源：地质与地球物理研究所
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