SEDL / STP / STP883-EB / STP36353S

The Deformation Properties of Warm Permafrost

Shields, DH
Professor, professor, adjunct professor, and graduate student, University of Manitoba, Winnipeg, Manitoba

Domaschuk, L
Professor, professor, adjunct professor, and graduate student, University of Manitoba, Winnipeg, Manitoba

Man, C-S
Professor, professor, adjunct professor, and graduate student, University of Manitoba, Winnipeg, Manitoba

Kenyon, RM
Professor, professor, adjunct professor, and graduate student, University of Manitoba, Winnipeg, Manitoba

Pages: 14    Published: Jan 1985

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Abstract

Six pressuremeter tests and one multistage triaxial creep test were conducted on a prepared frozen sand at −2.5 and −3°C, respectively. The pressuremeter study suggested that the model of incompressible power-law fluid, which is sometimes used in the numerical modelling of frozen-ground geotechnical problems, would not provide a suitable “simplified constitutive relation” on which we could base the design of a new standard pressurementer test for discerning long-term creep properties of warm permafrost. The multistage triaxial creep test showed a correlation between the decreasing or increasing in volume of the specimen and the attenuating or nonattenuating character of its axial creep behavior.