POLYPROPYLENE FIBERS MODIFIED BY ATMOSPHERIC PRESSURE PLASMA AS REINFORCEMENT FOR CONCRETE

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Authors

FIALOVÁ Monika MORÁVEK Tomáš KOPKÁNĚ Daniel RÁHEĽ Jozef SŤAHEL Pavel ČERNÁK Mirko

Year of publication 2012
Type Article in Proceedings
Conference Conference proceedings NANOCON 2012
MU Faculty or unit

Faculty of Science

Citation
Web http://www.nanocon.eu/files/proceedings/04/reports/801.pdf
Field Plasma physics
Keywords polypropylene fibers; fiber reinforced concrete; surface energy; Washburn method
Description This contribution deals with the atmospheric pressure plasma treatment of PP fibers that leads to the increase of surface energy of polypropylene and the improvement of cohesion of PP fibers to cement matrix as well. The plasma modification was performed by Diffuse Coplanar Surface Barrier Discharge operating at atmospheric pressure in ambient air. The surface energy of PP fibers was studied by the method based on the measurement of the weight of absorbed water as a function of time. The change in cohesion was tested by restrain shrinkage test on mortar samples. It was confirmed that the plasma treatment improved the surface wetting properties of PP fibers and the mechanical performance of the plasma treated PP fibers reinforcing concrete.
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