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Analysis of inner structure changes of concretes exposed to high temperatures using micro X-ray computed tomography
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SYSNO ASEP 0449381 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Analysis of inner structure changes of concretes exposed to high temperatures using micro X-ray computed tomography Author(s) Sitek, Libor (UGN-S) RID, ORCID
Bodnárová, L. (CZ)
Souček, Kamil (UGN-S) RID, ORCID
Staš, Lubomír (UGN-S) RID, ORCID
Gurková, Lucie (UGN-S)Number of authors 5 Source Title Acta geodynamica et geomaterialia. - : Ústav struktury a mechaniky hornin AV ČR, v. v. i. - ISSN 1214-9705
Roč. 12, č. 1 (2015), s. 78-89Number of pages 11 s. Publication form Online - E Language eng - English Country CZ - Czech Republic Keywords concrete ; cement paste ; aggregate ; high temperature Subject RIV JQ - Machines ; Tools R&D Projects GAP104/12/1988 GA ČR - Czech Science Foundation (CSF) Institutional support UGN-S - RVO:68145535 UT WOS 000352975100007 EID SCOPUS 2-s2.0-84928138034 DOI 10.13168/AGG.2015.0009 Annotation The X-ray Computed Tomography (X-ray CT) repr esents a progressive non-destructive metho d of analysing the inner structure of materials. The method was used for monitoring changes in inner structure of concrete samples of different composition before and after their exposure to various thermal loads. Eight types of concrete samples were prepared which differed by cement and aggregate types. We intentionally used such composition of concrete mixtures which increased their resistance to high temperatures. The inner structure of samples was analysed using the micro X-ray CT before the therma l loading and after exposure of samples to temperatures of 600 °C or 900 °C. Damages and character of changes in the inner structure caused by high temperatures were influenced by the character of cement and aggregate we used. The analysis of obtained results is presented in the paper. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2016 Electronic address https://www.irsm.cas.cz/materialy/acta_content/2015_doi/Sitek_AGG_2015_0009.pdf
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