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

Cite as:

Warsitzka, Michael; Závada, Prokop; Krýza, Ondřej; Pohlenz, Andre; Rosenau, Matthias (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. V. 1. GFZ Data Services. https://doi.org/10.5880/fidgeo.2021.024

Status

I N R E V I E W : Warsitzka, Michael; Závada, Prokop; Krýza, Ondřej; Pohlenz, Andre; Rosenau, Matthias (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. V. 1. GFZ Data Services. https://doi.org/10.5880/fidgeo.2021.024

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.

Authors

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

Contact

Rosenau, Matthias (Lab manager) ; GFZ German Research Centre for Geosciences, Potsdam, Germany; ➦

Contributors

Laboratory of the Institute of Geophysics (Czech Academy of Science, Czech Republic); HelTec - Helmholtz Laboratory for Tectonic Modelling (GFZ Potsdam, Germany)

Keywords

EPOS, multi-scale laboratories, analogue models of geologic processes, property data of analogue modelling materials, Cohesion, Friction coefficient, deformation > fracturing, earth interior setting > crust setting > continental-crustal setting > upper continental crustal setting, fault, Force sensor, Iron Powder, Sand > Quartz Sand, Ring-shear tester, tectonic and structural features, Cohesion, Force sensor, Friction coefficient, Iron Powder, Ring-shear tester, Sand > Quartz Sand, deformation > fracturing, earth interior setting > crust setting > continental-crustal setting > upper continental crustal setting, fault, tectonic and structural features