Description: 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.
Global identifier:
Doi(
"10.5880/fidgeo.2021.024",
)
Origins: /Wissenschaft/GFZ
Tags: Silikat ? Sand ? Kind ? Daten ? Modellierung ? Forschungseinrichtung ? Geowissenschaften ? Cohesion ? EARTH SCIENCE > SOLID EARTH > TECTONICS ? EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > CALIBRATION/VALIDATION ? EPOS ? Force sensor ? Friction coefficient ? Iron Powder ? Ring-shear tester ? Sand > Quartz Sand ? analogue models of geologic processes ? deformation > fracturing ? earth interior setting > crust setting > continental-crustal setting > upper continental crustal setting ? fault ? multi-scale laboratories ? property data of analogue modelling materials ? tectonic and structural features ?
License: cc-by/4.0
Language: Englisch/English
Issued: 2021-01-01
Time ranges: 2021-01-01 - 2021-01-01
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