Experimental study of compact sandstone deformation under axisymmetric triaxial loading along specific paths in stress space
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F23%3A00577482" target="_blank" >RIV/68145535:_____/23:00577482 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s00603-023-03581-z" target="_blank" >https://link.springer.com/article/10.1007/s00603-023-03581-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00603-023-03581-z" target="_blank" >10.1007/s00603-023-03581-z</a>
Alternative languages
Result language
angličtina
Original language name
Experimental study of compact sandstone deformation under axisymmetric triaxial loading along specific paths in stress space
Original language description
The deformation of rocks well below their ultimate strengths is frequently described through the constant stiffness moduli of the linear elasticity theory. In addition, the isotropic material approximation is usually used as the basic approach. Particularly in sedimentary rocks, local inhomogeneities, anisotropy, and irreversible processes, mainly related to the gradual breakage of grain joints, can affect their deformation behavior from the beginning of the loading. Consequently, the stiffness moduli measured under triaxial conditions are effective parameters, which may depend on the loading path in the stress space. Therefore, a complex experimental study of the deformation response of compact sedimentary rock (Brenna sandstone) along various paths in triaxial stress space was prepared to understand this dependence. In addition, a detailed analysis of the rock composition and structure of this compact sandstone was carried out. This paper presents an initial experimental study that is based on a loading method using alternative stress paths that correspond to different modes of the monotonic increase in differential stress from an initial isotropic compression state. In the experiment, the dependence of stiffness moduli on the loading path was found. Differences in rock deformation for conventional triaxial compression and extension can be attributed to a slight rock anisotropy originating from the stratification. The different behavior of deformation and related stiffness moduli along so-called reduced triaxial paths and conventional paths indicates that irreversible processes must be taken into account.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
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
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Rock Mechanics and Rock Engineering
ISSN
0723-2632
e-ISSN
1434-453X
Volume of the periodical
57
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
17
Pages from-to
97-113
UT code for WoS article
001087369900001
EID of the result in the Scopus database
2-s2.0-85174587721