Effect of sieving height on density and friction of brittle analogue material: Ring-shear test data of corundum sand used for analogue experiments in the Tectonic Modelling Lab of the University of Bern (CH)

10.5880/fidgeo.2020.005 Schmid, Timothy Timothy Schmid 0000-0002-9477-9654 Institute of Geological Sciences, University of Bern, Switzerland Schreurs, Guido Guido Schreurs 0000-0002-4544-7514 Institute of Geological Sciences, University of Bern, Switzerland Warsitzka, Michael Michael Warsitzka 0000-0003-1774-5888 GFZ German Research Centre for Geosciences, Potsdam, Germany Rosenau, Matthias Matthias Rosenau 0000-0003-1134-5381 GFZ German Research Centre for Geosciences, Potsdam, Germany Effect of sieving height on density and friction of brittle analogue material: Ring-shear test data of corundum sand used for analogue experiments in the Tectonic Modelling Lab of the University of Bern (CH) GFZ Data Services 2020 EPOS analogue models of geologic processes multi-scale Laboratories property data of analogue modelling materials cohesion Friction coefficient Ring-shear tester Sand > Corrundum sand Deformation > fracturing tectonic and structural features European Plate Observing System Analogue material Density EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > TECTONIC PROCESSES > RIFTING EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > PLATE BOUNDARIES EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > CALIBRATION/VALIDATION EARTH SCIENCE SERVICES > MODELS > PHYSICAL/LABORATORY MODELS Force sensor Friction > Imposed Stress LabView Deformation Mapper sand Shear Box HelTec - Helmholtz Laboratory for Tectonic Modelling (GFZ German Research Centre for Geosciences, Germany) 9ba34c109b827b177aab36e0266b1643 GFZ German Research Centre for Geosciences, Potsdam, Germany Tectonic Modelling Laboratory at the Institute for Geological Sciences (TecLab Bern, Switzerland) dd35a3d4b656f3c9bb0d88fe2ff654a2 Institute of Geological Sciences of the University of Bern, Switzerland Tectonic Modelling Laboratory at the Institute for Geological Sciences (TecLab Bern, Switzerland) dd35a3d4b656f3c9bb0d88fe2ff654a2 Institute of Geological Sciences of the University of Bern, Switzerland Rosenau, Matthias GFZ German Research Centre for Geosciences, Potsdam, Germany 2019-07-09 Dataset 10.1016/j.tecto.2016.01.017 10.1016/j.jsg.2006.05.004 10.1002/2016JB012915 10.1016/j.jsg.2015.03.008 10.1002/ceat.200303112 https://www.springer.com/de/book/9783540737674 10.1016/j.tecto.2016.02.036 CC BY 4.0 This dataset provides friction data from ring-shear tests (RST) for a corundum sand (“NKF120”). This material is used in various types of analogue experiments in Tectonic Modelling Lab of the University of Bern as an analogue for brittle layers in the crust or lithosphere. The material has been characterized by means of internal friction coefficients μ and cohesions C. Three sub-datasets represent a systematic increase of the sieving height from 10 cm to 20 cm to 30 cm into a shear cell of type No. 1, following the same protocol. This dataset shows that packing density of corundum sand is dependent on the chosen sieving height. However, the effect of the sieving height on internal friction coefficients μ as well as cohesion C is minor and thus negligible in sandbox experiments. According to our analysis the material shows for a sieving height of 10 cm a Mohr-Coulomb behaviour characterized by a linear failure envelope and peak, dynamic and reactivation friction coefficients of μP = 0.75, μD = 0.64 and μR = 0.68, respectively. Cohesions C are in the order of 70 – 105 Pa.