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Measurement of Swelling, Hydraulic Conductivity, and Shear Strength in a Multistage Triaxial Test
Author(s) -
Parker J. C.,
Amos D. F.,
Sture S.
Publication year - 1980
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1980.03615995004400060002x
Subject(s) - compressibility , geotechnical engineering , extrapolation , triaxial shear test , hydraulic conductivity , overburden pressure , materials science , compression (physics) , saturation (graph theory) , effective stress , shear (geology) , geology , soil water , mechanics , composite material , soil science , mathematics , mathematical analysis , physics , combinatorics
The multistage triaxial (MST) test described here measured swelling on saturation, hydraulic conductivity, isotropically consolidated‐undrained strength, and drained and undrained compressibility. Peak strengths were evaluated by application of a hyperbolic stress‐strain model and by extrapolation of stress‐strain curves to failure. Strength parameters obtained from MST and conventional triaxial (CT) tests agreed reasonably well for three compacted soils of widely varying properties. Both drained and undrained compression modulii from MST tests increased logarithmically with increasing confining pressure. Initial undrained compression modulii from CT and MST tests agreed fairly well, although there was a definite tendency towards reduced compressibility in the later stages of MST tests. Volumetric compressibilities during the drained phases of MST tests were markedly lower than those obtained in K 0 compression tests.