Study on the mechanism of mechanical property strengthening of Beishan granite under mild temperature condition
文献类型：期刊论文
| 作者 | Yang, Fubo; Chen, Shiwan; Zheng, Kexun; Tian, Yunlei; He, Qi |
| 刊名 | CASE STUDIES IN THERMAL ENGINEERING
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 40 |
| 关键词 | Thermal healing Acoustic emission Pore size distribution DME and DRA |
| ISSN号 | 2214-157X |
| 英文摘要 | Many researches found that mechanical properties of granite were strengthened under the mild temperature range (within 300 degrees C), which is positive for the long-term safety of the high-level radioactive waste (HLW) geological disposal engineering. To study the thermal strengthening mechanism of granite under elevated temperature by the decay heat of the HLW, a novel experiment was carried out which stress loaded firstly to cause stress damage, then thermal loaded to study the temperature effect on stress damaged granite. Results show: (1) the defor-mation memory effect and the Kaiser effect existed after stress loaded for non-thermal treated and 120 degrees C treated on granite, while the deformation memory effect (DME) was significantly faded after 250 degrees C treated. (2) The volume of pores/cracks in Beishan granite increased after stress loaded, then decreased significantly after 120 degrees C and 250 degrees C treated. (3) The deformation behavior, AE activity and pores/cracks closure all showed that the stress induced damage could be healed at elevated temperature, which is positive for the HLW disposal engineering. (4) A viscoelastic frictional sliding model was used to analyze the mechanism of DME fading and the mechanical property strengthening. |
| 学科主题 | Thermodynamics |
| 语种 | 英语 |
| WOS记录号 | WOS:000892260200009 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34947]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Guizhou University; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Yang, Fubo,Chen, Shiwan,Zheng, Kexun,et al. Study on the mechanism of mechanical property strengthening of Beishan granite under mild temperature condition[J]. CASE STUDIES IN THERMAL ENGINEERING,2022,40. |
| APA | Yang, Fubo,Chen, Shiwan,Zheng, Kexun,Tian, Yunlei,&He, Qi.(2022).Study on the mechanism of mechanical property strengthening of Beishan granite under mild temperature condition.CASE STUDIES IN THERMAL ENGINEERING,40. |
| MLA | Yang, Fubo,et al."Study on the mechanism of mechanical property strengthening of Beishan granite under mild temperature condition".CASE STUDIES IN THERMAL ENGINEERING 40(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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