中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 武汉岩土力学研究所
  3. 中科院武汉岩土力学所
Mechanical behavior of Tamusu mudstone under elevated temperatures

文献类型：期刊论文

作者Yu, Hongdan1; Lu, Chen1; Chen, Weizhong1; Lu, Haifeng2; Huang, Jiawei1
刊名CASE STUDIES IN THERMAL ENGINEERING
出版日期2024-03-01
卷号55页码:10
关键词Tamusu mudstone Mechanical behavior Temperature Experiment
ISSN号2214-157X
DOI10.1016/j.csite.2024.104174
英文摘要Tamusu mudstone is a potential geological medium for high-level radioactive waste disposal in China. In this study, the mechanical behavior of Tamusu mudstone was examined through a series of triaxial compression experiments conducted under varying confining pressures (5, 10, 15, and 20 MPa) at two temperatures: 22 degrees C and 80 degrees C. The experimental findings revealed that heating strengthened the mechanical properties of Tamusu mudstone when compared under the same hydro-mechanical conditions. The strength, elastic modulus, cohesion, and friction angle of Tamusu mudstone increased after being subjected to elevated temperatures. However, the brittleness of Tamusu mudstone was also enhanced compared to its behavior at room temperature. The investigation into the post-peak deformation properties of Tamusu mudstone indicated a gradual failure process, which possibly involved multiple stress drops. As the number of stress drops increased, the rate of deviatoric stress reduction gradually decreased, while the corresponding plastic deformation progressively increased. This behavior was attributed to the weakened cohesion and strengthened friction of the Tamusu mudstone. This study contributes to the understanding of thermomechanical phenomena in argillaceous rocks and provides important input parameters for theoretical and numerical modeling in the safety assessment of HLW repositories.
资助项目National Natural Science Foundation of China[42377179] ; National Natural Science Foundation of China[51979266] ; National Natural Science Foundation of China[51991392]
WOS研究方向Thermodynamics
语种英语
WOS记录号WOS:001199332300001
出版者ELSEVIER
源URL[http://119.78.100.198/handle/2S6PX9GI/41040]  
专题中科院武汉岩土力学所
通讯作者Chen, Weizhong; Lu, Haifeng
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.Wuhan Univ, Sch Civil & Architectural Engn, Wuhan, Peoples R China
推荐引用方式
GB/T 7714		 Yu, Hongdan,Lu, Chen,Chen, Weizhong,et al. Mechanical behavior of Tamusu mudstone under elevated temperatures[J]. CASE STUDIES IN THERMAL ENGINEERING,2024,55:10.
APA Yu, Hongdan,Lu, Chen,Chen, Weizhong,Lu, Haifeng,&Huang, Jiawei.(2024).Mechanical behavior of Tamusu mudstone under elevated temperatures.CASE STUDIES IN THERMAL ENGINEERING,55,10.
MLA Yu, Hongdan,et al."Mechanical behavior of Tamusu mudstone under elevated temperatures".CASE STUDIES IN THERMAL ENGINEERING 55(2024):10.

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。