Ring-shear test data of quartz sand – silicate cenospheres mixtures used for analogue experiments at the Institute of Geophysics of the Czech Academy of Science, Prague

This dataset provides friction data from ring-shear tests (RST) for mixtures of quartz sand and sili-cate cenospheres, which are used for analog experiments in the laboratory of the Institute of Geo-physics of the Czech Academy of Science (IG CAS) (Warsitzka et al., 2021). The mixtures have been characterized by means of internal friction coefficients µ and cohesion C as a remote service by the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam.

According to our analysis the materials show a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak friction coefficients µP of the tested materials range between 0.55 and 0.75, dynamic friction coefficients µD between 0.47 and 0.60 and reactivation friction coefficients µR be-tween 0.52 and 0.65. Cohesions of the materials vary between 20 and 120 Pa. The materials show a minor rate-weakening of <1.2% per ten-fold change in shear velocity v.

Additional Info

Field Value
Source http://doi.org/doi:10.5880/fidgeo.2021.024
Author Warsitzka, Michael (Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic), Závada, Prokop (Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic), Krýza, Ondřej (Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic), Pohlenz, Andre (GFZ German Research Centre for Geosciences, Potsdam, Germany), Rosenau, Matthias (GFZ German Research Centre for Geosciences, Potsdam, Germany)
Provided by other-lab
Citation Warsitzka, Michael, Závada, Prokop, Krýza, Ondřej, Pohlenz, Andre, Rosenau, Matthias (2021): GFZ Dataservices http://doi.org/doi:10.5880/fidgeo.2021.024
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Created at repository 2021-05-21
Dataset contact Rosenau, Matthias ( GFZ German Research Centre for Geosciences, Potsdam, Germany Lab manager rosen@gfz-potsdam.de http://www.gfz-potsdam.de/en/staff/matthias-rosenau/ informtion )
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Publication date 2021-09-03
Publisher http://www.gfz-potsdam.de