Investigation on the relationship between CT numbers and marble failure under different confining pressures

doi:10.1515/rams-2021-0070

	Investigation on the relationship between CT numbers and marble failure under different confining pressures
	Yang Yan-Shuang 4; Li Kai-Yue 4; Zhou Hui 3; Tian Hao-Yuan 2; Cheng Wei 4; Zhang Zhan-Rong 1; Musonda, Kaunda 4
刊名	REVIEWS ON ADVANCED MATERIALS SCIENCE
	2021-11-05
卷号	60 期号:1 页码:846-852
关键词	CT scan confining pressure statistical distri-bution damage variable
ISSN号	1606-5131
DOI	10.1515/rams-2021-0070
英文摘要	Computed tomography (CT) scanning technology is helpful in investigating rock materials as it can demon-strate the micro structure of rock clearly. Conventional triaxial compression tests and the corresponding graded triaxial loading tests were carried out to investigate the complex failure mechanism of the marble at the Jinping Hydropower Station. After that CT-scanning tests were done on the loaded marble specimens. The test results show that (1) the CT numbers of the specimens have a certain statistical regularity, that is, the CT numbers of the specimens under different confining pressures satisfy the Weibull distribution, as the confining pressure increases, the mean values rise while variances decrease; (2) in the two groups of tests, the average CT numbers corresponding to the conventional triaxial tests are higher than those cor-responding to the graded loading tests, but the CT number variances are lower than those of the graded loading tests; and (3) according to meso-damage mechanics, the damage variables of the rock specimens were established based on the definition of CT numbers. The calculation results show that the damage variables decrease with the increase in con-fining pressure, the damage variables of the rock specimens in the graded loading tests are higher than those in the conventional triaxial test, and the differences between the two loading tests have grown with the increase in confining pressure.
资助项目	National Natural Science Foundation of China[51609080] ; National Natural Science Foundation of China[51708188]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	DE GRUYTER POLAND SP Z O O
WOS记录号	WOS:000718185400001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28274]
专题	中科院武汉岩土力学所
通讯作者	Yang Yan-Shuang
作者单位	1.China Railway Siyuan Survey & Design Grp Co Ltd, Wuhan 430063, Hubei, Peoples R China 2.Wuhan Surveying Geotech Res Inst CO LTD MCC, Wuhan 430000, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 4.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Wuhan 430068, Peoples R China
推荐引用方式 GB/T 7714	Yang Yan-Shuang,Li Kai-Yue,Zhou Hui,et al. Investigation on the relationship between CT numbers and marble failure under different confining pressures[J]. REVIEWS ON ADVANCED MATERIALS SCIENCE,2021,60(1):846-852.
APA	Yang Yan-Shuang.,Li Kai-Yue.,Zhou Hui.,Tian Hao-Yuan.,Cheng Wei.,...&Musonda, Kaunda.(2021).Investigation on the relationship between CT numbers and marble failure under different confining pressures.REVIEWS ON ADVANCED MATERIALS SCIENCE,60(1),846-852.
MLA	Yang Yan-Shuang,et al."Investigation on the relationship between CT numbers and marble failure under different confining pressures".REVIEWS ON ADVANCED MATERIALS SCIENCE 60.1(2021):846-852.