Effects of water content and particle crushing on the shear behaviour of an infilled-joint soil

doi:10.1680/geot.11.P.060

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Effects of water content and particle crushing on the shear behaviour of an infilled-joint soil
	Zhao, Y.1,2; Zhou, H.1,2; Feng, X. T.1,2; Cui, Y. J.3,4
刊名	GEOTECHNIQUE
	2012
卷号	62 期号:12 页码:1133-1137
关键词	laboratory tests particle crushing/crushability shear strength suction
ISSN号	0016-8505
DOI	10.1680/geot.11.P.060
英文摘要	Ring shear tests were carried out on a compacted low-plasticity infilled-joint soil from Beihetan site in China. Different initial water contents (5.0, 9.0 and 13.5%) were considered. It was observed that the failure envelope is linear for the peak deviator stress but highly non-linear for the residual deviator stress in the range of high normal stresses (higher than 400 kPa), evidencing the particle crushing effect on the residual strength. Furthermore, this particle crushing effect was dependent on water content: the residual friction angle is larger at higher water content. Further grain size analysis was performed on the portion taken in the zone of shear band after each test, and changes of the fractions of 75 mu m and 2 mu m were compared for different water contents. The results indicate clearly that the effect of water content on particle crushing depends on particle size. For large particles (> 75 mu m), water content increase enhances the particle crushing by the fracture mechanism. On the contrary, for smaller particles (< 2 mu m), water content increase reduces the particle crushing by the mechanism of attrition or abrasion. Deeper analysis of the effect of the ratio of the final to initial fraction of soil with particle size less than 2 mu m, S2, on the shear strength suggests that the effect of particle crushing on the residual shear strength is mainly through the production of extra clay-size particles (< 2 mu m).
WOS研究方向	Engineering
语种	英语
出版者	ICE PUBLISHING
WOS记录号	WOS:000312729200007
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3403]
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 & Geoengn ; 2.N China Univ Water Resources & Elect Power ; 3.Tongji Univ ; 4.Ecole Ponts ParisTech
推荐引用方式 GB/T 7714	Zhao, Y.,Zhou, H.,Feng, X. T.,et al. Effects of water content and particle crushing on the shear behaviour of an infilled-joint soil[J]. GEOTECHNIQUE,2012,62(12):1133-1137.
APA	Zhao, Y.,Zhou, H.,Feng, X. T.,&Cui, Y. J..(2012).Effects of water content and particle crushing on the shear behaviour of an infilled-joint soil.GEOTECHNIQUE,62(12),1133-1137.
MLA	Zhao, Y.,et al."Effects of water content and particle crushing on the shear behaviour of an infilled-joint soil".GEOTECHNIQUE 62.12(2012):1133-1137.