Experimental Study on Damage and Fracture Characteristics of Beishan Granite Subjected to High-temperature Treatment with DIC and AE Techniques

doi:10.1007/s00603-020-02271-4

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	Experimental Study on Damage and Fracture Characteristics of Beishan Granite Subjected to High-temperature Treatment with DIC and AE Techniques
	Miao, Shuting 1,2; Pan, Peng-Zhi 1,2; Zhao, Xingguang 3; Shao, Changyue 1,2; Yu, Peiyang 1,2
	2020-11-02
发表期刊	ROCK MECHANICS AND ROCK ENGINEERING
ISSN	0723-2632
期号	-页码:23
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.
关键词	High temperature treatment Physical-mechanical characteristics Acoustic emission Digital image correlation Thermally induced microcracks
DOI	10.1007/s00603-020-02271-4
收录类别	SCI
语种	英语
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
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000584381900001
出版者	SPRINGER WIEN
引用统计	被引频次：90[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.198/handle/2S6PX9GI/25083
专题	中科院武汉岩土力学所
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Beijing Res Inst Uranium Geol, CNNC Key Lab Geol Disposal High Level Radioact Wa, Beijing 100029, Peoples R China
第一作者单位	中科院武汉岩土力学所
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.

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