Critical state-based interpretation of the monotonic behaviour of Hostun sand
File(s)
Accepted version
Author(s)
Azeiteiro, RJN
Coelho, PALF
Taborda, DMG
Grazina, JCD
Type
Journal Article
Abstract
A series of bender element tests and drained and undrained monotonic triaxial compression and extension tests were performed on air-pluviated samples of Hostun sand. Samples were prepared to different initial void ratios, consolidated under various isotropic and anisotropic stress states, and sheared using different stress paths and a wide range of deformations to characterize the sand’s stress-strain response. The results suggest that the sand’s small-strain behavior essentially depends on the current void ratio and mean effective stress. Within the medium to large strain range, a state-parameter approach in conjunction with the critical-state framework can successfully predict the distinctive states of the sand’s monotonic response, namely the phase-transformation, peak-stress-ratio, and critical states. Furthermore, the data are used to examine a stress-dilatancy relationship often incorporated in constitutive models. The characterization presented herein aims at assisting the efficient calibration of numerical models and provides insight into this sand’s behavior, thus supporting the interpretation of results of physical modeling involving this sand. This paper highlights the importance of characterizing sand’s behavior over the full strain range and shows that accurate predictions of the critical state and small-strain stiffness are crucial to assess other aspects of the sand’s behavior.
Date Issued
2017-05-01
Date Acceptance
2016-09-28
Citation
Journal of Geotechnical and Geoenvironmental Engineering, 2017, 143 (5), pp.1-1
ISSN
0733-9410
Publisher
American Society of Civil Engineers
Start Page
1
End Page
1
Journal / Book Title
Journal of Geotechnical and Geoenvironmental Engineering
Volume
143
Issue
5
Copyright Statement
© 2017 American Society of Civil Engineers.
Identifier
https://ascelibrary.org/doi/10.1061/%28ASCE%29GT.1943-5606.0001659
Subjects
Science & Technology
Technology
Physical Sciences
Engineering, Geological
Geosciences, Multidisciplinary
Engineering
Geology
Bender element tests
Triaxial testing
Dilatancy
Peak strength
Critical state
State parameter
BENDER ELEMENT TESTS
2-SURFACE PLASTICITY
STRESS PATH
LOOSE SAND
MODEL
FORMULATION
DILATANCY
STRENGTH
COMPRESSION
FAILURE
Geological & Geomatics Engineering
0905 Civil Engineering
0907 Environmental Engineering
Publication Status
Published
Article Number
04017004
Date Publish Online
2017-01-31