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Study of the effect of moisture content and bending rate on the fracture toughness of rocks
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SYSNO ASEP 0394580 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Study of the effect of moisture content and bending rate on the fracture toughness of rocks Tvůrce(i) Vavro, Leona (UGN-S) RID
Souček, Kamil (UGN-S) RID, ORCIDCelkový počet autorů 2 Zdroj.dok. Acta geodynamica et geomaterialia. - : Ústav struktury a mechaniky hornin AV ČR, v. v. i. - ISSN 1214-9705
Roč. 10, č. 2 (2013), s. 247-253Poč.str. 7 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova fracture toughness ; bending rate ; tensile strength Vědní obor RIV DB - Geologie a mineralogie CEP ED2.1.00/03.0082 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UGN-S - RVO:68145535 UT WOS 000321576700014 DOI 10.13168/AGG.2013.0025 Anotace Generally, rock material failure is c ontrolled by cracks under specific conditi ons. The study of rock fracture toughness belongs to the current frequent directions of research in the area of rock failure. The present paper describes the effects o f parameters influencing the resultant pr operties of rock materials (bending rate , rock moisture) during fracture toughness measurement of different kinds of rocks (sandstone, marble, granite). The highest fracture toughness values were found in the marble samples. This is probably due to the inner structure of analysed marble, which is composed of only one mineral (calcite) and also has a lower porosity th an the used granite. The lowest fracture toughness values were found in the sandstone sample, and reached c. 17–30 % of the measur ed fracture toughness values of the analys ed granite and marble samples. As in the case of the other mechanical properties of rocks (e.g. uni axial compressive strength) also in the case of higher sandstone (carboniferous) moisture the fracture toughness values decrease and its deformat ion ability increases. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2014 Elektronická adresa http://www.irsm.cas.cz/materialy/acta_content/2013_02/acta_170_14_Vavro_Soucek_247-253.pdf
Počet záznamů: 1