MECHANICAL PROPERTIES OF GRANULITE FROM HORNÍ BORY IN BOHEMIAN MASSIF
| Autor: | Martin Závacký, Dagmar Havlíčková, Lukáš Krmíček, Manfred Blümel, Iva Rozsypalová |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
geography
geography.geographical_feature_category lcsh:QE1-996.5 Geochemistry Massif engineering.material Feldspar Granulite triaxial compressive strength Kyanite lcsh:Geology Compressive strength mineral properties foliation granulite visual_art visual_art.visual_art_medium engineering Plagioclase Sillimanite uniaxial compressive strength Biotite Geology anisotropic properties |
| Zdroj: | GeoScience Engineering, Vol 65, Iss 4, Pp 38-53 (2019) |
| ISSN: | 1802-5420 |
| DOI: | 10.35180/gse-2019-0022 |
| Popis: | Granulite represents one of the favourite rock types for the construction of an underground nuclear waste repository in the Czech Republic. Granulite from the Bohemian Massif (locality Horni Bory) was investigated in this study, with a special focus on the evaluation of the rock anisotropy. Investigated rock represents typical fine-grained foliated felsic granulite with principal mineral association: quartz + feldspar (K-feldspar > plagioclase) + garnet + biotite + kyanite and/or sillimanite. Anisotropy was identified in the rock fabric both at macroscopic and microscopic scale. During the laboratory testing, granulite reached considerable high uniaxial compressive strength (UCS) - up to 240 MPa; and brittle type (Class II) of failure occurred. We found that variability of the UCS and Young's modulus were relatively low. On the other hand, variability of the Poisson's ratio and the constants in Hoek-Brown failure criterion in triaxial loading were significantly high. Keywords: granulite, mineral properties, foliation, uniaxial compressive strength, triaxial compressive strength, anisotropic properties DOI 10.35180/gse-2019-0022 |
| Databáze: | OpenAIRE |
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