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Laboratory Investigation of the Effect of Initial Dry Density and Grain Size Distribution on Soil–Water Characteristic Curves of Wide-Grading Gravelly Soil
Chen Xiaoqing1; Hu Kai1,2; Chen Jiangang1; Zhao Wanyu1
2018
Source PublicationGeotechnical and Geological Engineering
ISSN0960-3182
EISSN1573-1529
Volume36Issue:2Pages:885-896
SubtypeArticle
Contribution Rank1
AbstractWide-grading gravelly soils are often encountered in debris flow source areas. To perform stability analyses under rainfall conditions the soil–water characteristic curves (SWCC) are significant. However the studies for SWCC of wide-grading gravelly soils are rare. In order to investigate the effects of initial dry density and grain size distribution on the SWCCs of wide-grading gravelly a large-scale osmotic column allowing the measurement of both volumetric water content and matric suction at various levels was fabricated for a series of osmotic column tests. The test data were best-fitted to Van Genuchten equation using a least-squares algorithm and found that both the initial dry density and grain size distribution had a greater effect on the SWCCs. An increase in the initial dry density resulted in an increase in water retention capacity. The air entry value and residual volumetric water content increased linearly with increases in the initial dry density whereas the maximum slope of SWCC decreased linearly with increases in the initial dry density. The air entry value and residual volumetric water content increased linearly with increases in the fine content (particle diameter 10. © 2017 Springer International Publishing AG.
KeywordSoil–water characteristic curves Widegrading gravelly soil Initial dry density Grain size distribution
DOI10.1007/s10706-017-0362-1
Indexed ByEI
Language英语
EI Accession NumberAccession number:20173704145034
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25554
Collection山地灾害与地表过程重点实验室
Corresponding AuthorHu Kai
Affiliation1.CAS Key Laboratory of Mountain Hazards and Surface Processes Institute of Mountain Hazards and Environment Chinese Academy of Sciences #9 Block 4 Renminnanlu Road Chengdu ;610041 China ;
2.University of Chinese Academy of Sciences Beijing ;100049 China
Recommended Citation
GB/T 7714
Chen Xiaoqing,Hu Kai,Chen Jiangang,等. Laboratory Investigation of the Effect of Initial Dry Density and Grain Size Distribution on Soil–Water Characteristic Curves of Wide-Grading Gravelly Soil[J]. Geotechnical and Geological Engineering,2018,36(2):885-896.
APA Chen Xiaoqing,Hu Kai,Chen Jiangang,&Zhao Wanyu.(2018).Laboratory Investigation of the Effect of Initial Dry Density and Grain Size Distribution on Soil–Water Characteristic Curves of Wide-Grading Gravelly Soil.Geotechnical and Geological Engineering,36(2),885-896.
MLA Chen Xiaoqing,et al."Laboratory Investigation of the Effect of Initial Dry Density and Grain Size Distribution on Soil–Water Characteristic Curves of Wide-Grading Gravelly Soil".Geotechnical and Geological Engineering 36.2(2018):885-896.
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