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	Shear characteristics of calcareous gravelly soil
	Jin, Zong-Chuan3; Meng, Qing-Shan2; Wang, Ren2; Zhu, Chang-Qi2; Wang, Xin-Zhi2; Wang, Xing1,2
刊名	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
	2017
卷号	76期号:2页码:561-573
关键词	Shear characteristics Calcareous gravelly soil Large-scale direct shear test Coral reef Apparent cohesion
ISSN号	1435-9529
DOI	10.1007/s10064-016-0978-z
英文摘要	Because of its angularity, crushability, and high void ratio, calcareous gravelly soil has peculiar geotechnical properties. A series of large-scale direct laboratory shear tests was conducted on calcareous gravelly soil taken from coral reefs in the South China Sea. This study aimed to investigate the shear characteristics of calcareous gravelly soil under conditions of varying gradation, water content, density, and mineral composition. The experimental results revealed the extremely different mechanical properties of calcareous gravelly soil compared to common non-cohesive soil: calcareous gravelly soil has greater apparent cohesion, larger friction angle, and lower softening value than quartz sand. The friction angle increases with dry density, while the apparent cohesion increases with the median particle size (D (50)) of the soil. After shear failure, the apparent cohesion decreases significantly from the peak value, but friction angle decreased slightly. Grouting can be employed to reinforce foundations and enhance slopes consisting of calcareous gravelly soil at the early stage of shear failure. This study intends to provide reference information for engineering constructions on coral reefs and report new findings on coarse-grained soil.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000401408700013
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4053]
专题	岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文
作者单位	1.Univ Chinese Acad Sci ; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Shanghai Geotech Invest & Design Inst
推荐引用方式 GB/T 7714	Jin, Zong-Chuan,Meng, Qing-Shan,Wang, Ren,et al. Shear characteristics of calcareous gravelly soil[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2017,76(2):561-573.
APA	Jin, Zong-Chuan,Meng, Qing-Shan,Wang, Ren,Zhu, Chang-Qi,Wang, Xin-Zhi,&Wang, Xing.(2017).Shear characteristics of calcareous gravelly soil.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,76(2),561-573.
MLA	Jin, Zong-Chuan,et al."Shear characteristics of calcareous gravelly soil".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 76.2(2017):561-573.

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