Nonthermal plasma modification of polypropylene fibres for cementitious composites

• Autorzy: Tomáš Morávek , Monika Fialová , Daniel Kopkáně , Jozef Ráheľ , Pavel Sťahel , Mirko Černák
• Języki publikacji: EN

Abstrakty

EN

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.

EN

Słowa kluczowe

EN

plasma treatment; DCSBD; polypropylene fibres; concrete; confocal microsope; Washburn method

• Czasopismo: Open Chemistry
• Rocznik: 2015
• Tom: 13
• Numer: 1

Daty

otrzymano

2014-01-16

zaakceptowano

2014-05-29

online

2014-11-17

Twórcy

autor

Tomáš Morávek

• Department of Physical Electronics, Masaryk University, 61137 Brno, Czech Republic,

autor

Monika Fialová

• Department of Physical Electronics, Masaryk University, 61137 Brno, Czech Republic

autor

Daniel Kopkáně

• Faculty of Civil Engineering, Brno University of Technology, 66237 Brno,
  Czech Republic

autor

Jozef Ráheľ

• Department of Physical Electronics, Masaryk University, 61137 Brno, Czech Republic

autor

Pavel Sťahel

• Department of Physical Electronics, Masaryk University, 61137 Brno, Czech Republic

autor

Mirko Černák

• Department of Physical Electronics, Masaryk University, 61137 Brno, Czech Republic

Bibliografia

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Identyfikatory

DOI

10.1515/chem-2015-0029