<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The use of nonwoven geotextile filters is common in geoenvironmental and geotechnical engineering applications. The main requirements for successful performance of drainage and geotextile filters are soil retention, permeability and clogging resistance. In case of anti-clogging capabilities, the most popular method to evaluate the filtration behaviour of nonwoven geotextile in contact with soils is gradient ratio test. Also the number of constrictions of nonwoven geotextile should be determined on the basis of fibre diameter, thickness and porosity. The number of constrictions has been found to explain the different filtration behaviours of nonwoven geotextiles with similar or even the same opening sizes but different structures for various soil conditions. This paper presents the gradient ratio test program for internally unstable soil and nonwoven geotextiles with different structures. Test results show a significant impact of the number of constrictions on the filtration characteristics of geotextile. What is more some modifications to the filter design criteria are proposed based on interpretation of the experimental results.</p>
</abstract>

The use of nonwoven geotextile filters is common in geoenvironmental and geotechnical engineering applications. The main requirements for successful performance of drainage and geotextile filters are soil retention, permeability and clogging resistance. In case of anti-clogging capabilities, the most popular method to evaluate the filtration behaviour of nonwoven geotextile in contact with soils is gradient ratio test. Also the number of constrictions of nonwoven geotextile should be determined on the basis of fibre diameter, thickness and porosity. The number of constrictions has been found to explain the different filtration behaviours of nonwoven geotextiles with similar or even the same opening sizes but different structures for various soil conditions. This paper presents the gradient ratio test program for internally unstable soil and nonwoven geotextiles with different structures. Test results show a significant impact of the number of constrictions on the filtration characteristics of geotextile. What is more some modifications to the filter design criteria are proposed based on interpretation of the experimental results.

Impact of the Constrictions Number on Filtration Characteristics of Nonwoven Geotextiles

Warsaw University of Life Sciences – SGGW

Acta Scientiarum Polonorum Architectura

This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.

The use of nonwoven geotextile filters is common in geoenvironmental and geotechnical engineering applications. The main requirements for successful...

Impact of the Constrictions Number on Filtration Characteristics of Nonwoven Geotextiles

Published Online: Aug 05, 2022

Page range: 11 - 19

Received: Feb 20, 2022

Accepted: May 25, 2022

DOI: https://doi.org/10.22630/aspa.2022.21.2.10

Keywords
geotextile filter, drainage, clogging, gradient ratio, constrictions

© 2022 Anna Markiewicz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.

Impact of the Constrictions Number on Filtration Characteristics of Nonwoven Geotextiles

Published Online: Aug 05, 2022

Page range: 11 - 19

Received: Feb 20, 2022

Accepted: May 25, 2022

DOI: https://doi.org/10.22630/aspa.2022.21.2.10

Keywordsgeotextile filter, drainage, clogging, gradient ratio, constrictions

© 2022 Anna Markiewicz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.

Keywords
geotextile filter, drainage, clogging, gradient ratio, constrictions