Počet záznamů: 1
An advanced assessment of mechanical fracture parameters of sandstones depending on the internal rock texture features
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SYSNO ASEP 0503886 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název An advanced assessment of mechanical fracture parameters of sandstones depending on the internal rock texture features Tvůrce(i) Vavro, Leona (UGN-S) RID
Malíková, L. (CZ)
Frantík, P. (CZ)
Kubeš, P. (CZ)
Keršner, Z. (CZ)
Vavro, Martin (UGN-S) RID, ORCIDCelkový počet autorů 6 Zdroj.dok. Acta geodynamica et geomaterialia. - : Ústav struktury a mechaniky hornin AV ČR, v. v. i. - ISSN 1214-9705
Roč. 16, č. 2 (2019), s. 157-168Poč.str. 12 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova sandstone ; mode I fracture toughness ; bending Young's modulus ; fracture energy ; load–displacement diagram Vědní obor RIV JL - Únava materiálu a lomová mechanika Obor OECD Mechanical engineering CEP LO1406 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UGN-S - RVO:68145535 UT WOS 000473619300005 EID SCOPUS 85068474145 DOI 10.13168/AGG.2019.0013 Anotace In this paper, sandstones from three Czech localities were subjected to mechanical fracture testsin order to obtain their properties. Carboniferous sandstone from the Staříč site was primarilydifferent from the two other Cretaceous sandstones from Podhorní Újezd and Javorka localitiesin the type of grain contact, as well as in their mineralogical composition of the rock matrix andcement. These differences were primarily reflected in different rock porosities. An advancedassessment of the fracture response of the chevron notch specimens made of sandstonessubjected to three-point bending test was carried out by means of the GTDiPS programsuggested for processing the loading diagrams. Bending Young's modulus, mode I fracturetoughness and fracture energy were subsequently calculated for all tested sandstone samples.Obtained outcomes show that the sandstone from the Staříč mine exhibits several times highervalues of investigated properties than the Podhorní Újezd and Javorka sandstones. This wasa result of a higher degree of rock compaction, siliciferous rock cement and, therefore, relativelylow total porosity. Internal rock texture and mineralogical composition of matrix or cement arethus one of the most important factors influencing the values of mechanical fracture parametersof sandstones. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2020 Elektronická adresa https://www.irsm.cas.cz/materialy/acta_content/2019_doi/Vavro_AGG_2019_0013.pdf
Počet záznamů: 1