Evolution of Particle Breakage for Calcareous Sands during Ring Shear Tests

doi:10.1061/(ASCE)GM.1943-5622.0001073

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	Evolution of Particle Breakage for Calcareous Sands during Ring Shear Tests
	Wei, Houzhen 1; Zhao, Tao 2,3; He, Jianqiao 4; Meng, Qingshan 1; Wang, Xinzhi 1
	2018
发表期刊	INTERNATIONAL JOURNAL OF GEOMECHANICS
ISSN	1532-3641
卷号	18 期号:2 页码:-
摘要	Ring shear tests were performed in this work to investigate the characteristics of shear band formation and particle breakage for calcareous sands sampled from the South China Sea. The tests focused on the formation of shear band and the evolution of particle breakage under various levels of loading stress, together with sensitivity analyses of the initial sample grading and shear rate. The breakage of particles has a significant influence on the stress-strain relationship, volumetric deformation, and final grading of calcareous sands. In particular, the calcareous sand specimen tends to remain at a constant volume and a stable grading at shear strains larger than 2,000%. The change of the microstructure of calcareous sands during shearing has been illustrated by scanning electron microscopy (SEM) images, showing clear evolution of particle breakage and surface smoothness within the shear band. A considerable amount of fine particles (<0.074mm) was produced during the tests, and the final complete particle-size distribution was obtained with a laser diffraction particle-size analyzer. The findings of this study improve the understanding of calcareous sands by showing that they can be crushed readily under normal loading stress levels as long as the shear strain continues.
关键词	Ring shear test Calcareous sands Shear band Particle breakage Scanning electron microscopy (SEM)
DOI	10.1061/(ASCE)GM.1943-5622.0001073
收录类别	SCI
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Geological
WOS记录号	WOS:000418181600022
出版者	ASCE-AMER SOC CIVIL ENGINEERS
引用统计	被引频次：76[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/4204
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.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Tongji Univ, State Key Lab Geotech & Underground Engn, Minist Educ; 3.Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn ; 4.Guangxi Rd & Bridge Engn Grp Co Ltd
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	Wei, Houzhen,Zhao, Tao,He, Jianqiao,et al. Evolution of Particle Breakage for Calcareous Sands during Ring Shear Tests[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2018,18(2):-.
APA	Wei, Houzhen,Zhao, Tao,He, Jianqiao,Meng, Qingshan,&Wang, Xinzhi.(2018).Evolution of Particle Breakage for Calcareous Sands during Ring Shear Tests.INTERNATIONAL JOURNAL OF GEOMECHANICS,18(2),-.
MLA	Wei, Houzhen,et al."Evolution of Particle Breakage for Calcareous Sands during Ring Shear Tests".INTERNATIONAL JOURNAL OF GEOMECHANICS 18.2(2018):-.

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