Relation between crack geometrical parameters, fracture toughness and rock microstructure investigated using X-ray computed tomography

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F24%3A00597605" target="_blank" >RIV/67985891:_____/24:00597605 - isvavai.cz</a>
Alternative codes found
RIV/68145535:_____/24:00597605
Result on the web
<a href="http://dx.doi.org/10.1201/9781003429234-216" target="_blank" >http://dx.doi.org/10.1201/9781003429234-216</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1201/9781003429234-216" target="_blank" >10.1201/9781003429234-216</a>

Result language
angličtina
Original language name
Relation between crack geometrical parameters, fracture toughness and rock microstructure investigated using X-ray computed tomography
Original language description
In this contribution, the initial results of the study of the influence of rock microstructure and composition on the fracture toughness (FT) of rocks measured by the chevron bend (CB) test and subsequent analysis of cracks geometry using X-ray computed tomography (XCT) are presented. A total of 10 different types of rocks, mostly sandstones, were used for this testing. On the basis of laboratory experiments, the following conclusions can be made: (1) the value of crack length generally increases with decreasing rock porosity, (2) the value of crack length generally increases with increasing value of fracture toughness, (3) the value of the crack length of sandstones increases with a growing degree rock matrix silicification, (4) in porous rocks like sandstones, the crack propagation goes preferably throughout the pore space, and (5) in low-porosity crystalline igneous and metamorphic rocks, the cracks spread along grain bound-naries and often also break mineral grains.
Czech name
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Czech description
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Project
<a href="/en/project/GA23-05128S" target="_blank" >GA23-05128S: Influence of textural and structural features on failure of transversely isotropic rocks examined using 4D X-ray computed tomography</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the ISRM European Rock Mechanics Symposium EUROCK 2024
ISBN
978-103255144-9
ISSN
—
e-ISSN
—
Number of pages
6
Pages from-to
1409-1415
Publisher name
CRC Press
Place of publication
Alicante
Event location
Alicante
Event date
Jul 15, 2024
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
001310272000216

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