An experimental study on characteristics of impact compression of freeze-thawed granite samples under four different states considering moisture content and temperature difference

doi:10.1007/s12665-021-09952-5

	An experimental study on characteristics of impact compression of freeze-thawed granite samples under four different states considering moisture content and temperature difference
	Ke, Bo 1,2; Zhang, Chunyang 1,3; Liu, Chuanju 3; Ding, Linmin 4,5; Zheng, Yun 2; Li, Ning 1; Wang, Yixian 6; Lin, Hang 7
刊名	ENVIRONMENTAL EARTH SCIENCES
	2021-09-01
卷号	80 期号:18 页码:12
关键词	Granite samples Freeze-thaw cycles Impact compression test Impact strength Dynamic elastic modulus Freeze-thaw influence factor
ISSN号	1866-6280
DOI	10.1007/s12665-021-09952-5
英文摘要	The mechanics of rock masses in cold regions have attracted the attention of researchers from all over the world, and the concern here is that the mechanical properties of rock masses are inevitably weakened under freeze-thaw cycles. In this paper, first, granite samples were subjected to different freeze-thaw cycles, and then treated in four different states, such as saturated and frozen states, saturated and normal temperature states, dry and frozen states, as well as dry and normal temperature states. The impact compression test was carried out using the Split Hopkinson Pressure Bar (SHPB) device. Results show that the impact strength of granite samples deteriorates with the increase of freeze-thaw cycles in the same state; for samples in different states, although the number of freeze-thaw cycles is equal, the degree of deterioration of the impact strength is different. For freeze-thawed granite samples in the same state, the dynamic elastic modulus decreases with the increase of freeze-thaw cycles, and its degree of decrease is different for different states. Under the same freeze-thaw cycles, the deterioration of mechanical properties of granite samples is different in four different weather states; for example, the dynamic elastic modulus from large to small is generally as follows: saturated and frozen states, saturated and normal temperature states, dry and frozen states, as well as dry and normal temperature states. Finally, the freeze-thaw influence factor is proposed to describe the damage of granite samples. All in all, it can be concluded that water and low temperature strengthen the influence of freeze-thaw cycles on the dynamic mechanical properties of granite.
资助项目	Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z020015] ; National Natural Science Foundation of China[52174088] ; National Natural Science Foundation of China[42077249] ; National Key R&D Program of China[2019YFC0605304]
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000697661500001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27927]
专题	中科院武汉岩土力学所
通讯作者	Zhang, Chunyang
作者单位	1.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China 2.Wuchang Univ Technol, Sch Intelligent Construct, Wuhan 430223, Hubei, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Southwest Univ Sci & Technol, Sch Environm & Resource, Mianyang 621010, Sichuan, Peoples R China 5.Changsha Inst Min Res Co Ltd, Changsha 410012, Peoples R China 6.Hefei Univ Technol, Sch Civil Engn, Hefei 230009, Peoples R China 7.Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China
推荐引用方式 GB/T 7714	Ke, Bo,Zhang, Chunyang,Liu, Chuanju,et al. An experimental study on characteristics of impact compression of freeze-thawed granite samples under four different states considering moisture content and temperature difference[J]. ENVIRONMENTAL EARTH SCIENCES,2021,80(18):12.
APA	Ke, Bo.,Zhang, Chunyang.,Liu, Chuanju.,Ding, Linmin.,Zheng, Yun.,...&Lin, Hang.(2021).An experimental study on characteristics of impact compression of freeze-thawed granite samples under four different states considering moisture content and temperature difference.ENVIRONMENTAL EARTH SCIENCES,80(18),12.
MLA	Ke, Bo,et al."An experimental study on characteristics of impact compression of freeze-thawed granite samples under four different states considering moisture content and temperature difference".ENVIRONMENTAL EARTH SCIENCES 80.18(2021):12.