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Unconfined compression strength of unsaturated completely decomposed granite soil with different clay mixing ratios
Zhou W.H.; Xu X.
2015
Conference Name3rd International Symposium on Geomechanics from Micro to Macro
Source PublicationGeomechanics from Micro to Macro - Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
Volume2
Pages1341-1346
Conference DateSEP 01-03, 2014
Conference PlaceUniv Cambridge, Cambridge, ENGLAND
Abstract

Unconfined compression tests are commonly performed for the analysis of bearing capacity, slope stability and other engineering issues. This paper studies the unconfined compression strength of unsaturated Completely Decomposed Granite (CDG) soil mixed with different percentages of marine clay at different water contents. The filter paper technique was adopted to estimate soil matric suction. A series of Soil-Water Characteristic Curves (SWCC) were obtained for the unsaturated CDG, marine clay and their mixtures. The obtained SWCC curves were fitted using Fredlund & Xing equation and the effect of clay fraction on the fitting parameters are analyzed and discussed. Shear stress and strain relationships from unconfined compression tests are presented and discussed. It is observed that the soil shows strain hardening behavior at low suctions. But at large suctions, a significant softening behavior is seen after a rapid increase in shear stress at the beginning of compression. © 2015 Taylor & Francis Group.

URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000380529100217
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Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
AffiliationUniversidade de Macau
Recommended Citation
GB/T 7714
Zhou W.H.,Xu X.. Unconfined compression strength of unsaturated completely decomposed granite soil with different clay mixing ratios[C],2015:1341-1346.
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