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Alpine permafrost is sensitive to climate change, and the knowledge of mechanical behaviour of permafrost soil, especially in its response to a gradual warming cycle, is necessary to estimate the stability of rock glaciers and infrastructure in cold regions. Moreover, extension features in rock glaciers are becoming apparent in the field. The existence of cracks and crevasses (Roer et al., 2008) in some rock glaciers indicate that tension features will play a role in possible future failure mechanisms. Preliminary triaxial compression and extension tests on artificial frozen soil samples are underway in a cold room at different temperatures very close to 0°C. Artificial samples were developed in order to achieve controlled and repeatable sample states.
Authors:Yamamoto, Yuko and Springman, Sarah M.
Index Terms:SoilGroup; triaxial testing; laboratory test; frozen soil; sampling; Springman, Sarah M.; Yamamoto, Yuko
Further Information:Date published: 2010