Název: Performance of cement composites reinforced with surface-modified polypropylene micro-fibers
Autoři: Antoš, J. ; Dejdar, L. ; Trejbal, J. ; Prošek, Zdeněk
Typ dokumentu: Příspěvky z konference
Konference/Akce: Conference Nano and Macro Mechanics 2017 /8./, Prague (CZ), 20170921
Rok: 2017
Jazyk: eng
Abstrakt: This paper focuses on the mechanical properties investigation of cement pastes reinforced with surface treated polymer fibers. The cement matrix was composed of Portland cement (CEM I 42.5 R, w/c ratio equal to 0.4). Two polypropylene fiber types (micro-and macro-fibers) were used as randomly distributed and oriented reinforcement in volume amount of 2 %. The fibers were modified in the low-pressure inductively coupled cold oxygen plasma in order to enhance their surface interaction with the cement matrix. The investigated composite mechanical properties (load bearing capacity and response during loading) were examined indirectly by means of four-point bending mechanical destructive tests. A response of loaded samples containing treated fibers were compared to samples with reference fibers. Moreover, cracking behavior development was monitored using digital image correlation (DIC). This method enabled to record the micro-cracks system evaluation of both fiber reinforced samples.\n
Klíčová slova: cement composite; fiber reinforcement; four-point bending; plasma treatment; polymeric fiber; surface modification
Zdrojový dokument: Acta Polytechnica CTU Proceedings, ISBN 978-80-01-06346-0

Instituce: Fyzikální ústav AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0302429

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-408001


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Fyzikální ústav
Konferenční materiály > Příspěvky z konference