Pore property as an indicator of macro-deterioration in slightly weathered tuffs
文献类型：期刊论文
| 作者 | Li, Lihui1,2,5; Tan, Yufang4; Huang, Beixiu1,2,5; Deng, Xiaolong3 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2020-03-20 |
| 卷号 | 267页码:11 |
| 关键词 | Tuff Weathering Pore structure Macro-deterioration |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2020.105492 |
| 英文摘要 | Tuff rock is highly heterogeneous due to volcanic activity, hydrothermal alteration, and weathering. It is difficult to explain the deterioration mechanisms of the weathered rocks merely based on mineralogical and chemical parameters. It has been reported that subtle weathering can modify pore structure and subsequently affect the rock mechanical behavior of tuffs. In this work, the pore characteristics in slightly weathered tuffs and fresh tuffs are systematically analyzed based on Nuclear Magnetic Resonance (NMR) and Mercury Intrusion Porosimetry (MIP) tests. Additionally, meso-level uniaxial compression tests were conducted on the tuff samples by utilizing the MTI-LM (miniature tensile instrument-light microscope) system to detect the crack propagation and deformation process. The results demonstrated that additional mesopore (10-50 nm) increases with pore throat expansion during weathering, and the change of pore structure influences the tuff failure mode. Specifically, for the slightly weathered tuff, crack initiates in the altered minerals or matrix and results in shear failure. However, as for the fresh tuff, crack usually initiates in the intact and fresh minerals and matrix, and eventually leads to tensile failure. Therefore, we propose that tuff pore property can serve as potential indicator of the micromechanism of substantial macro-deterioration due to weathering. |
| WOS关键词 | COMPRESSIVE STRENGTH ; NONINTEGER DIMENSIONS ; PHYSICAL-PROPERTIES ; VOLCANIC-ROCKS ; CLASSIFICATION ; MECHANISMS ; CHEMISTRY ; BEHAVIOR ; POROSITY ; ZONE |
| 资助项目 | National Natural Science Foundation of China[41372322] ; National Natural Science Foundation of China[41641025] ; National Natural Science Foundation of China[41977248] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000518868200007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96213]  |
| 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 | Li, Lihui |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 3.China Highway Engn Consulting Corp, Beijing 100089, Peoples R China 4.Guangzhou Marine Geol Survey, Guangzhou 510760, Peoples R China 5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Lihui,Tan, Yufang,Huang, Beixiu,et al. Pore property as an indicator of macro-deterioration in slightly weathered tuffs[J]. ENGINEERING GEOLOGY,2020,267:11. |
| APA | Li, Lihui,Tan, Yufang,Huang, Beixiu,&Deng, Xiaolong.(2020).Pore property as an indicator of macro-deterioration in slightly weathered tuffs.ENGINEERING GEOLOGY,267,11. |
| MLA | Li, Lihui,et al."Pore property as an indicator of macro-deterioration in slightly weathered tuffs".ENGINEERING GEOLOGY 267(2020):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
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