CT measurement of damage characteristics of meso-structure of freeze-thawed granite in cold regions and preliminary exploration of its mechanical behavior during a single freeze-thaw process
文献类型：期刊论文
| 作者 | Zhang, Chunyang1,3,4,5; Tan, Tao3; Ke, Bo3; Ma, Bingde3,6; Dai, Bibo4,5; Fang, Zhiheng2; Zhao, Ercheng6 |
| 刊名 | APPLIED RHEOLOGY
 |
| 出版日期 | 2023-12-09 |
| 卷号 | 33期号:1页码:13 |
| 关键词 | freeze-thaw cycles granite CT scan fracture numerical simulation |
| ISSN号 | 1430-6395 |
| DOI | 10.1515/arh-2023-0106 |
| 英文摘要 | The freeze-thaw (FT) damage characteristics of granite after different FT cycles were studied using computed tomography (CT) images. The three-dimensional (3D) volume numbers in the image were extracted to obtain the 3D pore structure of representative volume elements (RVEs) of granite under different FT cycles. The CT images of granite after 80 FT cycles were selected to draw reference lines for quantitative analysis of the distribution of meso-cracks in granite after FT cycles. Subsequently, a finite element model was established to explore the mechanical properties of minerals in granite during a single FT process. The results show that the FT damage inside the granite exhibits fracture characteristics, and the number of internal cracks, cracks area, and voxel porosity increase with the increase of FT cycles. After 80 FT cycles, the distribution of meso-cracks on the cross-section of granite exhibits significant anisotropy, and the distribution density and variation coefficient of meso-cracks vary with the dip direction angle of the reference line. The maximum principal stress and strain in the finite element model are negatively related to temperature. The maximum principal stress and strain of biotite minerals are consistently higher than those of feldspar and mica during FT cycles. The results can provide a reference for exploring the internal mechanism of the weakening of mechanical properties of granite microstructure caused by FT damage in cold regions. |
| 资助项目 | Sinosteel Maanshan General Institute of Mining Research Co Ltd, China ; State Key Laboratory of Safety and Health in Metal Mines, China ; State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics ; Lanzhou Engineering & Research Institute of Nonferrous Metallurgy Co. Ltd, China |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001117781200001 |
| 出版者 | DE GRUYTER POLAND SP Z O O |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40132]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Tan, Tao |
| 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.Zhongye Changtian Int Engn Co Ltd, Changsha 410007, Hunan, Peoples R China 3.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Hubei, Peoples R China 4.Sinosteel Maanshan Gen Inst Min Res Co Ltd, Maanshan 243000, Anhui, Peoples R China 5.State Key Lab Safety & Hlth Met Mines, Maanshan 243000, Anhui, Peoples R China 6.Lanzhou Engn & Res Inst Nonferrous Met Co Ltd, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Chunyang,Tan, Tao,Ke, Bo,et al. CT measurement of damage characteristics of meso-structure of freeze-thawed granite in cold regions and preliminary exploration of its mechanical behavior during a single freeze-thaw process[J]. APPLIED RHEOLOGY,2023,33(1):13. |
| APA | Zhang, Chunyang.,Tan, Tao.,Ke, Bo.,Ma, Bingde.,Dai, Bibo.,...&Zhao, Ercheng.(2023).CT measurement of damage characteristics of meso-structure of freeze-thawed granite in cold regions and preliminary exploration of its mechanical behavior during a single freeze-thaw process.APPLIED RHEOLOGY,33(1),13. |
| MLA | Zhang, Chunyang,et al."CT measurement of damage characteristics of meso-structure of freeze-thawed granite in cold regions and preliminary exploration of its mechanical behavior during a single freeze-thaw process".APPLIED RHEOLOGY 33.1(2023):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。