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

Warsitzka, Michael; Závada, Prokop; Krýza, Ondřej; Pohlenz, Andre; Rosenau, M.

doi:10.5880/fidgeo.2021.024

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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

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Warsitzka, Michael
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Závada, Prokop
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Krýza, Ondřej
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/persons/resource/apohlenz

Pohlenz, Andre
4.1 Lithosphere Dynamics, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Rosenau, M.
4.1 Lithosphere Dynamics, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Citation

Warsitzka, M., Závada, P., Krýza, O., Pohlenz, A., Rosenau, M. (2021): 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.
https://doi.org/10.5880/fidgeo.2021.024

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007601

Abstract

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.