ausblenden:
Schlagwörter:
EPOS, Multi-scale laboratories, analogue models of geologic processes, 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
Zusammenfassung:
This dataset provides friction data from ring-shear tests (RST) for a quartz sand used in analogue experiments at the Institute of Geophysics of the Czech Academy of Science (IGCAS) (Kratinová et al., 2006; Zavada et al., 2009; Lehmann et al., 2017; Krýza et al., 2019). It is characterized by means of internal friction coefficients µ and cohesion C.
According to our analysis the materials show a Mohr-Coulomb behaviour characterized by a linear failure envelope. Peak friction coefficients µP of the tested material is ~0.75, dynamic friction coeffi-cients µD is ~0.60 and reactivation friction coefficients µR is ~0.64. Cohesions of the material range between 90 and 130 Pa. The material shows a minor rate-weakening of <1% per ten-fold change in shear velocity v.
