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3D image visualization of meso-structural changes in a bimsoil under uniaxial compression using X-ray computed tomography (CT)
Wang, Y.1; Li, C. H.1; Hu, Y. Z.2
2019-01-08
Source PublicationENGINEERING GEOLOGY
ISSN0013-7952
Volume248Pages:61-69
AbstractIn 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.
KeywordBimsoil Laboratory test X-ray CT Meso-structure Uniaxial compression
DOI10.1016/j.enggeo.2018.11.004
Funding OrganizationNational 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
WOS KeywordSOIL-ROCK MIXTURE ; SHEAR-STRENGTH ; BEHAVIOR ; BIMROCKS ; MODULUS ; MATRIX
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000458220900006
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90497
Collection页岩气与地质工程院重点实验室
Corresponding AuthorWang, Y.
Affiliation1.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
Recommended Citation
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.
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