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Undrained monotonic and cyclic shear response and particle crushing of silica sand at low and high pressures

Hyodo, Masayuki ; Wu, Yang ; Aramaki, Noritaka ; Nakata, Yukio

Canadian geotechnical journal, 2017-02, Vol.54 (2), p.207-218 [Peer Reviewed Journal]

Ottawa: NRC Research Press

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Title:
Undrained monotonic and cyclic shear response and particle crushing of silica sand at low and high pressures
Author: Hyodo, Masayuki ; Wu, Yang ; Aramaki, Noritaka ; Nakata, Yukio
Subjects: Analysis ; Behavior ; Breakage ; comportement au cisaillement ; Confining ; Correlation analysis ; Crushing ; cyclic stress ratio ; Fatigue (materials) ; Fluid mechanics ; Geology ; Geophysics ; Mechanical properties ; particle crushing ; particules de broyage ; phase transformation state ; Phase transitions (Physics) ; plastic work ; Pressure ; rapport cyclique de stress ; Sand ; Shear ; Shear (Mechanics) ; Shear strain ; Shear strength ; Silicon dioxide ; Stress ratio ; Stresses (Materials) ; travail plastique ; undrained shear behaviour ; état de transformation de phase
Is Part Of: Canadian geotechnical journal, 2017-02, Vol.54 (2), p.207-218
Notes: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Description: A series of undrained monotonic and cyclic triaxial tests were performed on silica sand at two initial densities and different confining pressures from 0.1 to 5 MPa to investigate their shear response and crushing behaviour. The influence of particle crushing on the undrained shear strength and pore-water pressure was examined. To clarify the evolution of particle crushing, undrained monotonic and cyclic tests were terminated at several distinctive stages and sieving analysis tests were subsequently performed on the tested specimens. In the undrained monotonic test, specimens exhibited remarkable dilation behaviour and experienced no apparent particle crushing at low confining pressures. An increase in the mean stress suppressed the dilatancy due to a faster increase of the pore-water pressure, giving rise to the occurrence of particle crushing. In the undrained cyclic test, a higher confining pressure and cyclic stress ratio resulted in a much higher relative breakage. At a specific cyclic stress ratio, the relative breakage increased as the cyclic loading progressed. The confining pressure and shear strain amplitude played a significant role in controlling the evolution of particle breakage. The correlation between the relative breakage and plastic work for specimens under isotropic consolidation, undrained monotonic, and cyclic loadings has been validated experimentally.
Publisher: Ottawa: NRC Research Press
Language: English

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Undrained monotonic and cyclic shear response and particle crushing of silica sand at low and high pressures

Hyodo, Masayuki ; Wu, Yang ; Aramaki, Noritaka ; Nakata, Yukio

Ottawa: NRC Research Press

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