Poroelastic solution to the Brazilian test

Amin Mehrabian, Younane N. Abousleiman

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The fully-coupled, poroelastic solution for the time-dependent stress and pore fluid pressure of a hollow or solid, cylindrical specimen of porous, fluid-saturated rock undergoing the diametral compression test is derived and presented. The long-time asymptote of the poroelastic solution for the case of solid specimen recovers the related elastic solution of Hondros.9 Findings reveal the nontrivial trend and substantial effect of the pore fluid pressure disturbances on the rock effective stress. The failure of solid cylinder is predicted to occur instantaneously after the compressive load is applied, yet, at a point away from the specimen center point. Conversely, delayed failure of hollow cylinder may occur after the pore fluid disturbances within the specimen diminish.

Original languageEnglish (US)
Article number104201
JournalInternational Journal of Rock Mechanics and Mining Sciences
StatePublished - Feb 2020

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology


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