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2000

Manahan, P. A., Konrad, J. M., Hofmann, B. A., Sego, D. C., Plewes, H. D., Wride, C. E., Robertson, P. K., Biggar, K. W.

Abstract: One of the primary objectives of the Canadian Liquefaction Experiment (CANLEX) project was to develop and evaluate undisturbed sampling techniques as part of the overall goal to focus and coordinate Canadian geotechnical expertise on the topic of soil liquefaction. Six sites were...

1984

Morgenstern, N. R., Hungr, O.

Ring shear tests on sand materials have been carried out to show whether there is a change in the behaviour of these materials at high shearing rates and normal stresses. This question is relevant to the problem of the mobility of large rock avalanches (stürzstroms), but is also of more general...

1999

Kaiser, P. K., McCreath, D. R., Martin, C. D.

Abstract: A review of underground openings, excavated in varying rock mass types and conditions, indicates that the initiation of brittle failure occurs when the damage index, Di, expressed as the ratio of the maximum tangential boundary stress to the laboratory unconfined compressive strength...

2022-10-05

Tony Zheng, Nicholas Beier

Reclamation of slurry materials such as mine tailings requires effective management of consolidation-induced water release in the long-term. This is particularly challenging for flocculated or thickened tailings which require excessive time to fully consolidate to the final landform due to their...

1977

Croasdale, K. R., Morgenstern, N. R., Nuttall, J. B.

Controlled field and laboratory tests were performed to investigate the relationship between ice strength and the maximum ice pressures on vertical piers. The apparatus used in the field tests consisted of a flat indentor (75 cm wide) which was pushed through the ice by hydraulic rams. 27 tests...

1989

Jamiolkowski, M., Bellotti, R., Ghionna, V., Peterson, R. W., Robertson, P.

The pressuremeter is a unique method for assessing directly the in situ shear stiffness of soils. However, the correct interpretation and application of the measured modulus must account for the relevant stress and strain level acting around the pressuremeter during the test. A method to correct...

1992

Ferreira, R. S., Robertson, P. K.

Abstract: An interpretation method has been developed to incorporate nonlinear soil behavior to interpret undrained pressure-meter test results. The method makes use of both the loading and unloading portions of the pressuremeter test. The proposed interpretation method accepts that some level of...

2007

Biggar, K., Donahue, R., Sego, D. C., Beier, N.

Abstract: The extraction and upgrading process for bitumen from oil sand deposits in Alberta, Canada currently requires large volumes of process water. This water demand is fulfilled by importing water and recycling/reuse of clarified process water. Reuse of the clarified water results in the...

2001

Qiu, Y. J., Sego, D. C.

Abstract: A vast amount and variety of mine tailings are produced around the world each day. These mining wastes must be properly managed. To evaluate mine tailings disposal technology, the appropriate engineering properties of the tailings must be ascertained. The results of a laboratory...

1996

Cruden, D. M., McAffee, R. P.

Abstract: Twenty topples are described from Rock Glacier Site, 2 km north of the summit of the Highwood Pass in the Front Ranges of the Rocky Mountains in Alberta. In situ field testing and laboratory tests indicated that the external force driving the toppling process is frost action within a...