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Confined Brazilian Tests for Rock Failure Envelope and Behavior

Abstract

Includes test data from Confined Brazilian Tests. The tests were aim at investigating the rock failure envelope of four different lithologies including Indiana limestone, Scioto sandstone, Grey Berea sandstone, and Tennessee sandstone. Tables include the strength data obtained using load and damage controlled Brazilian tests on the six lithologies. Confine Brazilian tests are preformed by wrapping a sample in a copper jacket so that the confining fluid does not directly interact with the sample. Then a constant confining pressure is applied to the fluid to create a state of triaxial stress in the disc such that the disc center is under three nonzero and unequal principal stress components. By increasing the confining pressure, the least principal stress changes from tensile to compressive so that rock failure can be investigated over a wide range of stress conditions.

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Additional Info

Last Updated: a month ago
Aug
2021
Data from August, 2021
Submitted Aug 30, 2021

Contact

University of Oklahoma


Status

Publicly accessible License 

Authors

Ahmad Ghassemi
University of Oklahoma
Yawei Li
University of Oklahoma

Keywords

Confined Brazilian Test, geophysics, geology, stress, failure, testing, test, failure envelope, triaxial stress, goemechanics, fracture, brittle ductile transition, confining pressure, Indiana limestone, limestone, Scioto sandstone, sandstone, Grey Berea sandstone, Tennessee Sandstone, strength, data, load control, damage contol, tensile, compressive

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