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	Laboratory investigation on strengthening behavior of frozen China standard sand
	Cai, Cong1; Ma, Wei1; Zhou, Zhiwei1; Mu, Yanhu1; Zhao, Shuping2,3; Chen, Dun1; Liao, Mengke4
刊名	ACTA GEOTECHNICA
	2019-02-01
卷号	14期号:1页码:179-192
关键词	CT scanning test Frozen standard sand Pressure melting Recrystallization Strengthening behavior Triaxial cyclic loading test
ISSN号	1861-1125
DOI	10.1007/s11440-018-0648-3
通讯作者	Zhao, Shuping(shuping@njnu.edu.cn)
英文摘要	In this paper, a series of triaxial cyclic loading-unloading (L-U-C), triaxial cyclic loading-unloading-holding (L-U-H-C) and triaxial cyclic stress relaxation tests (L-R-C) were performed for frozen China standard sand (FCSS) under laboratory conditions varying with confining pressure, temperature and holding time. A composite system synchronizing the real-time computed tomography (CT) device and the triaxial testing device was used to explore the internal structure change of FCSS during L-U-H-C. The strengthening behavior was clearly observed by comparing the L-U-C and L-U-H-C tests. While this behavior is generally caused by particle compaction as occurred in common soil, pressure melting of ice crystal and recrystallization followed may additionally contribute to strengthening behavior of frozen soil. The increase in mean CT number during the holding stage further confirms the effects of pressure melting of ice crystal and recrystallization on the strengthening of FCSS from an internal structure aspect.
收录类别	SCI
WOS研究方向	Engineering
WOS类目	Engineering, Geological
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000457431400011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558172
专题	寒区旱区环境与工程研究所
通讯作者	Zhao, Shuping
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China 2.Nanjing Normal Univ, Key Lab Visual Geog Environm, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China 3.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Jiangsu, Peoples R China 4.State Grid Xinjiang Econ Res Inst, Urumqi 830001, Peoples R China
推荐引用方式 GB/T 7714	Cai, Cong,Ma, Wei,Zhou, Zhiwei,et al. Laboratory investigation on strengthening behavior of frozen China standard sand[J]. ACTA GEOTECHNICA,2019,14(1):179-192.
APA	Cai, Cong.,Ma, Wei.,Zhou, Zhiwei.,Mu, Yanhu.,Zhao, Shuping.,...&Liao, Mengke.(2019).Laboratory investigation on strengthening behavior of frozen China standard sand.ACTA GEOTECHNICA,14(1),179-192.
MLA	Cai, Cong,et al."Laboratory investigation on strengthening behavior of frozen China standard sand".ACTA GEOTECHNICA 14.1(2019):179-192.

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