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Performance of cement composites reinforced with surface-modified polypropylene micro-fibers
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SYSNO ASEP 0517137 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Performance of cement composites reinforced with surface-modified polypropylene micro-fibers Author(s) Antoš, J. (CZ)
Dejdar, L. (CZ)
Trejbal, J. (CZ)
Prošek, Zdeněk (FZU-D)Number of authors 4 Source Title Acta Polytechnica CTU Proceedings, NMM 2017 - Nano & Macro Mechanics 2017, 13. - Prague : Czech Technical University in Prague, 2017 / Padevět P. - ISBN 978-80-01-06346-0 Pages s. 11-15 Number of pages 5 s. Publication form Online - E Action Conference Nano and Macro Mechanics 2017 /8./ Event date 21.09.2017 - 21.09.2017 VEvent location Prague Country CZ - Czech Republic Event type CST Language eng - English Country CZ - Czech Republic Keywords cement composite ; fiber reinforcement ; polymeric fiber ; surface modification ; four-point bending ; plasma treatment Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Institutional support FZU-D - RVO:68378271 UT WOS 000433365100002 DOI 10.14311/APP.2017.13.0011 Annotation 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.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020
Number of the records: 1