Micro‑Fracturing in Granitic Rocks During Uniaxial Loading: The Role of Grain Size Heterogeneity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F24%3A00579238" target="_blank" >RIV/67985530:_____/24:00579238 - isvavai.cz</a>

Alternative codes found

RIV/67985831:_____/24:00579238

Result on the web

<a href="https://doi.org/10.1007/s00603-023-03668-7" target="_blank" >https://doi.org/10.1007/s00603-023-03668-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00603-023-03668-7" target="_blank" >10.1007/s00603-023-03668-7</a>

Result language

angličtina

Original language name

Micro‑Fracturing in Granitic Rocks During Uniaxial Loading: The Role of Grain Size Heterogeneity

Original language description

Laboratory loading experiments, in general, are used to estimate the mechanical properties of rocks. The application of acoustic emission (AE), a proxy for very small-scale earthquakes, offers insights into rock fracturing, especially when advanced seismological methods are applied. The uniaxial compressive test, the most conventional test within the scope of laboratory rock mechanics, estimates strength, elastic constants, or microcracking thresholds. Obviously, rock structure and grain size heterogeneity are the crucial parameters controlling these mechanical properties. Here, four granites with a different structure were uniaxially loaded, while AE was monitored, in order to observe the manner of fracturing. AE data were utilized at three different quality levels (AE recognition, AE localization, and the AE source mechanism). However, our focus was to study AE source mechanisms via the application of a shear-tensile crack source model. During a uniaxial compressive test, common (structurally independent) AE features led to the general characterization of microfracturing. On the other hand, sample related differences in AE results are discussed with respect to the role of granite heterogeneity. The comprehensiveness of the AE application demonstrated the validity of various levels of AE experiments.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

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

2024

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

57

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

19

Pages from-to

1963-1981

UT code for WoS article

001114664300001

EID of the result in the Scopus database

2-s2.0-85171174457