Počet záznamů: 1
Microstructural changes in building materials after various consolidation treatments studied by small-angle neutron scattering, mercury intrusion porosimetry and scanning electron microscopy
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SYSNO ASEP 0575353 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Microstructural changes in building materials after various consolidation treatments studied by small-angle neutron scattering, mercury intrusion porosimetry and scanning electron microscopy Tvůrce(i) Ryukhtin, Vasil (UJF-V) RID, ORCID, SAI
Slížková, Zuzana (UTAM-F) RID, SAI, ORCID
Strunz, Pavel (UJF-V) RID, ORCID, SAI
Bauerová, Pavla (UTAM-F) RID, SAI
Frankeová, Dita (UTAM-F) RID, SAI, ORCIDCelkový počet autorů 5 Zdroj.dok. Journal of Applied Crystallography. - : Wiley - ISSN 0021-8898
Roč. 56, č. 4 (2023), s. 976-987Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova building materials ; consolidating treatments ; cultural heritage ; small-angle neutron scattering ; SANS ; mercury intrusion porosimetry ; MIP ; scanning electron microscopy ; SEM Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP EF16_013/0001812 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CICRR - 90241 - Centrum výzkumu Řež s.r.o. Způsob publikování Omezený přístup Institucionální podpora UJF-V - RVO:61389005 ; UTAM-F - RVO:68378297 UT WOS 001046279800007 EID SCOPUS 85168081495 DOI 10.1107/S1600576723005320 Anotace Stone or rendered facades of historical buildings often encounter loss of cohesion after long-term weathering. Specialist consolidating agents containing nanoparticles which can penetrate the degraded layer are used to extend the lifetime of such facades. Clay mortar prepared in the laboratory was used in the present study as a material for testing the effectiveness of several consolidating agents. Changes in porosity after treatment of the sample layers were assessed using small-angle neutron scattering, mercury intrusion porosimetry and scanning electron microscopy techniques. The scattering differed for the various samples, mainly in the medium range of scattering vector magnitudes. The cause of the scattering was ascribed to three populations of pores: large (micrometres), medium-sized (thousands of angstroms) and small (hundreds of angstroms). While the non-treated sample and the sample treated with a silicic acid ester-based product do not exhibit significant differences, the sample treated with a nano-lime suspension shows a decrease of 16% in the volume fraction of medium-sized pores. A difference was also observed in the sample treated with a dihydrogen ammonium phosphate solution: the size of the medium pores increased while their volume fraction decreased, and a change in the large pores was observed. The modelled small pores remained unaffected by the consolidating treatment. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2024 Elektronická adresa https://doi.org/10.1107/S1600576723005320
Počet záznamů: 1