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Experimental Study on Damage and Fracture Characteristics of Beishan Granite Subjected to High-temperature Treatment with DIC and AE Techniques
文献类型：期刊论文
| 作者 | Miao, Shuting2,3; Pan, Peng-Zhi2,3; Zhao, Xingguang1; Shao, Changyue2,3; Yu, Peiyang2,3 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2020-11-02 |
| 页码 | 23 |
| 关键词 | High temperature treatment Physical-mechanical characteristics Acoustic emission Digital image correlation Thermally induced microcracks |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-020-02271-4 |
| 英文摘要 | The effect of high temperatures up to 800 degrees C on the physical and mechanical characteristics and fracturing behaviour of Beishan granite is experimentally studied with a combination of acoustic emission (AE), digital image correlation (DIC) and optical microscope observations. The experimental results show that the responses of the P-wave velocity, the effective porosity, Young's modulus, and the uniaxial compressive strength (UCS) of the granite to temperature are different. The critical temperature for the brittle-ductile transition of Beishan granite is between 500 and 600 degrees C. The counts, cumulative energy, b value, and waveform from AE and the full-field deformation evolution from DIC are combined to investigate the damage evolution and fracture mechanism in heated granite. It is found that a rise in temperature increases the number of AE events but reduces the cumulative energy release. Tensile microcracking mainly occurs in granite exposed to low temperatures, while shear fracturing gradually dominates in granite exposed to higher temperatures. With increasing temperature from 25 to 800 degrees C, the failure mode of granite specimens changes from being controlled by longitudinal splitting cracks to a single shear fracture and finally to multiple conjugate shear fractures. Microscopic observation of granite thin sections is conducted to further reveal the essential mechanism driving the physical-mechanical response and fracturing behaviour of heated Beishan granite. |
| 资助项目 | State Key Research Development Program of China[2017YFC0804203] ; National Natural Science Foundation of China[51621006] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSWDQC029] ; Chinese Scholarship Council |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000584381900001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25082]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Pan, Peng-Zhi |
| 作者单位 | 1.Beijing Res Inst Uranium Geol, CNNC Key Lab Geol Disposal High Level Radioact Wa, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Miao, Shuting,Pan, Peng-Zhi,Zhao, Xingguang,et al. Experimental Study on Damage and Fracture Characteristics of Beishan Granite Subjected to High-temperature Treatment with DIC and AE Techniques[J]. ROCK MECHANICS AND ROCK ENGINEERING,2020:23. |
| APA | Miao, Shuting,Pan, Peng-Zhi,Zhao, Xingguang,Shao, Changyue,&Yu, Peiyang.(2020).Experimental Study on Damage and Fracture Characteristics of Beishan Granite Subjected to High-temperature Treatment with DIC and AE Techniques.ROCK MECHANICS AND ROCK ENGINEERING,23. |
| MLA | Miao, Shuting,et al."Experimental Study on Damage and Fracture Characteristics of Beishan Granite Subjected to High-temperature Treatment with DIC and AE Techniques".ROCK MECHANICS AND ROCK ENGINEERING (2020):23. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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