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Optimisation of Operational Parameters for Nonwoven Sheaths of Water Absorbing Geocomposites in Unsaturated Soil Conditions

Research and development

Authors:

  • Lejcuś Krzysztof
    Institute of Environmental Engineering, Faculty of Environmental Engineering and Geodesy, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
  • Dąbrowska Jolanta (j/w)
  • Grzybowska-Pietras Joanna
    Institute of Civil Engineering, Faculty of Materials and Environment Science, University of Bielsko Biala, Bielsko-Biała, Poland
  • Garlikowski Daniel
    Institute of Environmental Engineering, Faculty of Environmental Engineering and Geodesy, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
  • Lejcuś Iwona
    Institute of Meteorology and Water Management - National Research Institute, Wrocław Branch, Wrocław, Poland
  • Pawłowski Andrzej
    Institute of Environmental Engineering, Faculty of Environmental Engineering and Geodesy, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
  • Śpitalniak Michał (j/w)

Nr DOI: 10.5604/12303666.1196620

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Abstract:

This study analyses  tests influencing the selection of nonwovens for water absorbing geocomposites. The task of the nonwoven is to capture  water infiltrating into the soil and to direct it to the superabsorbent located inside. The best results in the tests of water permeability (88 mm/s) and water absorption (1116.85 g/m2) were obtained for  nonwoven of the lowest surface weight - 112.8 g/m2 and the largest average pore diameter - 206.5 μm. The lowest water absorption capacity (478.91 g/m2) and the smallest thickness changes under a load (19.3%) was noted in needle-punched nonwoven that had been subject to the calandering process. For one nonwoven, the presence of other significant fractions was noted, which proves that it is heterogeneous. For nonwovens applied in the unsaturated zone, not only water permeability should be taken into account, but also the size and  fraction distribution of pores, in order to avoid breaking the continuity of capillaries.

Tags:

 nonwovens, water absorbing geocomposites, water retention, erosion, water scarcity.

Citation:

Lejcuś K, Dąbrowska J, Grzybowska-Pietras J, Garlikowski D, Lejcuś I, Pawłowski A, Śpitalniak M. Optimisation of Operational Parameters for Nonwoven Sheaths of Water Absorbing Geocomposites in Unsaturated Soil Conditions. FIBRES & TEXTILES in Eastern Europe  2016; 24, 3(117): 110-116. DOI: 10.5604/12303666.1196620

Published in issue no 3 (117) / 2016, pages 110–116.

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