Počet záznamů: 1
Deterioration of bonding capacity of plasma-treated polymer fiber reinforcement
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SYSNO ASEP 0500480 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Deterioration of bonding capacity of plasma-treated polymer fiber reinforcement Tvůrce(i) Trejbal, J. (CZ)
Nežerka, V. (CZ)
Somr, M. (CZ)
Fládr, J. (CZ)
Potocký, Štěpán (FZU-D) RID, ORCID
Artemenko, Anna (FZU-D) RID, ORCID
Tesárek, P. (CZ)Celkový počet autorů 7 Zdroj.dok. Cement and Concrete Composites. - : Elsevier - ISSN 0958-9465
Roč. 89, May (2018), s. 205-215Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova polymer fiber reinforcement ; chemical bonding ; cold plasma treatment ; pull-out strength ; contact angle Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Civil engineering CEP LM2015088 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora FZU-D - RVO:68378271 UT WOS 000433400800018 EID SCOPUS 85044140485 DOI 10.1016/j.cemconcomp.2018.03.010 Anotace Bonding between reinforcing fibers and a brittle cementitious matrix is the key ingredient for a ductile concrete production. Oxygen plasma treatment proved to be a promising technique for increasing the fiber surface adhesion to liquids, but a question about the stability of activated bonding when exposed to atmospheric conditions arises. We present a study on deterioration of such treatment in time for different fibers commonly used as dispersed reinforcement. A microscopy investigation allowed to observe changes in the fiber surface morphology, while the changes in chemical bonds were detected by XPS analysis. To quantify the impact of plasma treatment and its deterioration, WCA measurements and pull-out tests were carried out. The results indicate that the exposure to atmospheric conditions has a negligible impact on fiber bonding, because surface roughening plays a major role. Therefore, fibers need not be incorporated into a concrete mix immediately after their treatment. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2019
Počet záznamů: 1