Corundum Sand Ring-Shear Test Data for Analogue Tectonic Experiments

Friction data from ring-shear tests characterize corundum sand used as a brittle crust analogue. The dataset includes internal friction coefficients and cohesions for three sieving heights (10, 20, 30 cm). Timothy Schmid from the University of Bern created this dataset to study packing density effects.

Use Cases

• Calibrating material properties for sandbox tectonic experiments based on reported friction coefficients.
• Analyzing the effect of sieving height on material packing density based on the described experimental protocol.
• Validating Mohr-Coulomb failure models for brittle analogue materials based on the reported linear failure envelope.
• Comparing peak, dynamic, and reactivation friction coefficients for granular materials in geomechanical studies.

Strengths

• Reports specific friction coefficients: μP = 0.75, μD = 0.64, μR = 0.68.
• Provides cohesion values in the range of 70 – 105 Pa.
• Systematically compares three sieving heights (10 cm, 20 cm, 30 cm).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Tectonic Modelling Lab of the University of Bern

Collection Method

Ring-shear tests (RST) performed on corundum sand (NKF120) following a standardized protocol.