Microscopic analysis of degradation of polymer fibres subjected to aggressive environment

0446498 - ÚTAM 2016 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Kostelecká, M. - Kytýř, Daniel - Petráňová, Veronika - Koudelka_ml., Petr
Microscopic analysis of degradation of polymer fibres subjected to aggressive environment.
Advanced materials research. Zürich: Trans Tech Publications, 2015 - (Drochytka, R.; Vaněrek, J.; Benešová, A.), s. 169-172. ISBN 978-3-03835-506-9.
[Conference on the Rehabilitation and Reconstruction of Buildings (CRRB) /16./. Brno (CZ), 05.11.2014-06.11.2014]
Grant CEP: GA ČR(CZ) GBP105/12/G059
Institucionální podpora: RVO:68378297
Klíčová slova: polypropylene fiber * polyvinyl alcohol fiber * SEM microscope * corrosive environment
Kód oboru RIV: JN - Stavebnictví
http://www.scientific.net/AMR.1122.169

The paper presents deals with degradation of polypropylene (PP) and polyvinyl-alcohol (PVA) fibers used as a reinforcement in fiber-cement boards. The fibers were immersed for 28 days in three different solutions generating corrosive environment similar to conditions observed during service life of the intended application. The solutions used in the study contained: i) 3 % NaCl, ii) 5 % NaOH and iii) 5 % H2SO4. To obtain information about long term and also short term behaviour of the fibers part of investigated specimens was inspected for damage after 7 day exposure to corrosive environment. The results show that the corrosive resistance of the recently proposed PVA fibers is comparable to PP fibers when in either case structure of the fibers was not violated
Trvalý link: http://hdl.handle.net/11104/0248496