Contribution of neutron tomography to 3D heterogeneity analysis of granitic rocks

0534580 - GLÚ 2021 RIV CZ eng J - Journal Article
Zel, I. Yu. - Petružálek, Matěj - Kichanov, S.E. - Nazarov, K. M. - Lokajíček, Tomáš - Kozlenko, D. P. - Turková, I. - Kotrlý, M. - Onysko, R.
Contribution of neutron tomography to 3D heterogeneity analysis of granitic rocks.
Acta geodynamica et geomaterialia. Roč. 17, č. 3 (2020), s. 259-267. ISSN 1214-9705. E-ISSN 2336-4351
R&D Projects: GA ČR(CZ) GA18-08826S
Institutional support: RVO:67985831
Keywords : Neutron tomography * mica spatial distribution * granite * heterogeneity * anisotropy * Bohemian Massif
OECD category: Environmental and geological engineering, geotechnics
Impact factor: 1.176, year: 2020
Method of publishing: Open access
https://www.irsm.cas.cz/materialy/acta_content/2020_doi/Zel_AGG_2020_0019.pdf

Volumetric studies of mica spatial distribution inside samples of Westerly and Czech granites (Mrakotin, Liberec, and Brno syenite) were performed using a neutron tomography method. A significant difference in the neutron attenuation coefficients of mica and other rock-forming minerals of the granites studied yielded a large neutron radiography contrast and, as a result, allowed us to perform a detailed analysis of three-dimension structural data based on the neutron tomography reconstruction procedure. The morphology and spatial distribution of the mica phase within studied granites were obtained. Tomography data were compared to results provided by other experimental methods commonly used in rock mechanics research such as optical and electron microscopy, as well as ultrasonic shear-wave measurements. The benefits and limitations for application of the neutron tomography method for studies of granite like rocks are discussed.

Permanent Link: http://hdl.handle.net/11104/0312948