Triaxial Compressive Strength Tests on Comiso Limestone Samples

Sixteen experimental datasets on 'Comiso' limestone from Sicily, Italy, collected by researchers at the University of Portsmouth. The data includes time, displacement, pressure, and temperature recordings from triaxial compression tests on twenty cylindrical samples under various confining pressures and thermal pre-treatments. The dataset supports the findings published in the Journal of Geophysical Research: Solid Earth in 2018.

Use Cases

• Modeling the brittle-ductile transition in limestone based on recorded axial and radial pressures.
• Analyzing the effect of thermal pre-treatment (150-600°C) on compressive strength based on sample preparation details.
• Calibrating constitutive models for rock deformation using time-series data of volume displacements and pressures.
• Studying pore pressure effects in saturated rock samples based on fluid pump pressure recordings.

Strengths

• Data from 16 distinct triaxial compression experiments is provided.
• Experiments cover a range of four confining pressures (simulating depths from 290 m to 2.0 km).
• Sample preparation is detailed, including oven-dried and water-saturated conditions.
• A subset of samples underwent thermal treatment at four specific temperatures (150, 300, 450, 600°C).

Limitations

• Three of the twenty conducted experiments are missing from the dataset.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Rock Mechanics Laboratory, University of Portsmouth; data hosted by the British Geological Survey (BGS).

Collection Method

Laboratory experiments using a Snachez triaxial cell, with data recorded from pumps, pressure sensors, LVDTs, and temperature sensors.

Freshness

Last updated 2026-05-28 14:04:55.123700; freshness should be verified.

Geography

Samples from the Ragusa Formation in Sicily, Italy.