Nonthermal plasma modification of polypropylene fibres for cementitious composites

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Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
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MORÁVEK Tomáš FIALOVÁ Monika KOPKÁNĚ Daniel RÁHEĽ Jozef SŤAHEL Pavel ČERNÁK Mirko

Rok publikování 2015
Druh Článek v odborném periodiku
Časopis / Zdroj Open Chemistry
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Doi http://dx.doi.org/10.1515/chem-2015-0029
Obor Fyzika plazmatu a výboje v plynech
Klíčová slova plasma treatment; DCSBD; polypropylene fibres; concrete; confocal microscope
Popis The plasma treatment of polypropylene fibres used as concrete admixtures for improving its mechanical properties is the focus of this research paper. A plasma treatment was conducted in a low-temperature plasma environment at atmospheric pressure in a DCSBD (Diffuse Coplanar Surface Barrier Discharge). The degree of hydrophilicity caused by the plasma treatment was determined by measuring the rate of penetration of water into the porous media, commonly referred to as the Washburn method. The influence of the addition of PP (polypropylene) fibres to the concrete matrix was investigated using a three point bending test which determined the flexural strength of concrete samples. Our experiments demostrate that plasma improves both the wettability of PP fibres and its adhesion to the concrete matrix. The tests of flexural strength show, that even a short plasma treatment (5 s) can have a significant impact on the mechanical properties of fibre-reinforced concrete composite.
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