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Thermal degradation study of Westerly granite by ultrasonic sounding and mercury porosimetry
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SYSNO ASEP 0576926 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Thermal degradation study of Westerly granite by ultrasonic sounding and mercury porosimetry Tvůrce(i) Lokajíček, Tomáš (GLU-S) RID, SAI, ORCID
Petružálek, Matěj (GLU-S) RID, SAI, ORCID
Aminzadeh, Ali (GLU-S)
Řimnáčová, Daniela (USMH-B) ORCID, SAI
Přikryl, R. (CZ)Zdroj.dok. Proceedings of the ISRM 15th International Congress on Rock Mechanics and Rock Engineering & 72nd Geomechanics Colloquium – Challenges in Rock Mechanics and Rock Engineering. - Salzburg : Austrian Society for Geomechanics, 2023 / Schubert W. ; Kluckner A. - ISBN 978-3-9503898-3-8 Rozsah stran s. 2607-2612 Poč.str. 6 s. Forma vydání Online - E Akce International ISRM Congress 2023 /15./ Datum konání 09.10.2023 - 14.10.2023 Místo konání Salzburg Země AT - Rakousko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. AT - Rakousko Klíč. slova Granite ; Thermal degradation ; Porosity ; Ultrasonic sounds Obor OECD Environmental and geological engineering, geotechnics CEP GA21-26542S GA ČR - Grantová agentura ČR Institucionální podpora GLU-S - RVO:67985831 ; USMH-B - RVO:67985891 Anotace Westerly granite (WG) is a well-known rock, believed to be isotropic. We studied WG samples heated between 100°C and 800°C, by ultrasonic sounding (US), mercury intrusion porosimetry (MIP). Thermal treatment studies are important for localities like nuclear waste storages, geothermal projects, rocks and earthquake mechanics. All measurements were done at room temperature. It was found that P and S US wave velocity, amplitude, frequency and elastic modulus decreased more than 60% as a result of thermal rock material disintegration due to the increased temperature treatment. Image analyses showed that there is also a preferred orientation of microcracks regardless of their size and thermal treatment level. MIP showed that the pore size distributions vary with different heating temperatures in depending on the thermal WG treatment. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Tel.: 226 800 273 Rok sběru 2024
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