Evolution of Reversible and Irreversible Deformations of Compact Sandstone Under Different Modes of Triaxial Loading

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F25%3A00619549" target="_blank" >RIV/68145535:_____/25:00619549 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/s00603-025-04538-0" target="_blank" >https://doi.org/10.1007/s00603-025-04538-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00603-025-04538-0" target="_blank" >10.1007/s00603-025-04538-0</a>

Result language

angličtina

Original language name

Evolution of Reversible and Irreversible Deformations of Compact Sandstone Under Different Modes of Triaxial Loading

Original language description

Uniaxial or standard triaxial tests, which are the most frequently used in geotechnical practice, do not always simulate in-situ conditions of rocks well. Therefore, the deformations of rocks are now investigated even along alternative loading paths in the stress space. However, these alternatives are mainly used to study the conditions of the ultimate failure of rocks. Their deformational behavior along the alternative paths in the anticipated quasi-elastic stress region and corresponding stiffness moduli are rarely analyzed. Our recent study of the Brenna sandstone therefore compared deformational responses to monotonic loading along selected alternative paths in this stress region. The present new study aimed to evaluate the role of irreversible processes in deformation behavior under the different triaxial loading modes. The experimental methods included the following tests: cyclic isotropic compression, cyclic triaxial pure shear, and cyclic conventional triaxial compression. Irreversible deformation processes representing gradual breakage of rock were confirmed throughout the hypothetical quasi-elastic region. These processes, which may include damage to inter-grain connections or permanent displacements at grain contacts in cracks, are dependent on the stress path. The results also indicate a slight material anisotropy associated with stratification. The reversible and irreversible strains along several alternative triaxial stress paths were estimated. The study’s results are significant for predicting the deformation response of sedimentary rocks to in situ stress. Identification of the extent of the irreversible processes is crucial for understanding the mechanical behavior of these rocks during different time evolutions of in-situ stress or conditions of repeated loading/unloading.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Rock Mechanics and Rock Engineering

ISSN

0723-2632

e-ISSN

1434-453X

Volume of the periodical

58

Issue of the periodical within the volume

May 2025

Country of publishing house

AT - AUSTRIA

Number of pages

22

Pages from-to

8845-8866

UT code for WoS article

001480747200001

EID of the result in the Scopus database

2-s2.0-105004005705