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Wet front movement and capillary rise testing of a wicking non-woven geotextile component

Gabriele Martins, Md Zahid Hassan, Jamie Bartz, Sam Bhat, Fernando Portelinha, Marolo C. Alfaro ORCID logo

In the proceedings of: GeoManitoba 2025: 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference

Session: Geosynthetics Ground Improvement

ABSTRACT: Geosynthetics in pavements provide separation, stabilization, reinforcement and/or drainage functions. A newly developed geogrid composite with wicking non-woven geotextile transports water at zero gradient, utilizing its unique fiber microstructure and proprietary chemical treatment. This study quantifies its unsaturated hydraulic behavior and water transportation abilities through capillary rise and wet front movement tests. Capillary rise tests measured the Water Retention Curve (WRC) under suctions up to 10 kPa. Wet front movement tests were completed in vertical and horizontal directions with the sample submerged in water at one end. Additional horizontal wet front movement tests were performed under applied normal pressure. Results demonstrate the geotextile’s ability to transport water over long horizontal distances, even under load, revealing its capability to act as a drainage material in pavement structures. However, further research is needed to assess the geotextile performance in field conditions.


RÉSUMÉ: Les géosynthétiques utilisés dans les chaussées assurent des fonctions de séparation, de stabilisation, de renforcement et/ou de drainage. Un géocomposite à base de géogrille récemment développé, incorporant un géotextile non tissé à effet mèche, transporte à gradient nul, grâce à sa microstructure de fibres unique et à un traitement chimique propriétaire. Cette étude quantifie son comportement hydraulique en conditions non saturées et ses capacités de transport de l'eau à travers des essais de montée capillaire et de déplacement du front d'humidité. Les essais de montée capillaire ont permis de mesurer la courbe de rétention d'eau (CRE) pour des suctions allant jusqu’à 10 kPa. Des essais de déplacement du front humide ont été réalisés verticalement et horizontalement, avec un échantillon immergé dans l’eau à une extrémité. Des essais supplémentaires de déplacement horizontal du front humide ont été effectués sous pression normale appliquée. Les résultats démontrent la capacité du géotextile à transporter l’eau sur de longues distances horizontales, même sous charge, révélant ainsi son potentiel en tant que matériau drainant dans les structures de chaussées. Toutefois, des recherches supplémentaires sont nécessaires pour évaluer les performances du géotextile en conditions de terrain.


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Cite this article:
Martins, Gabriele, Hassan, Md Zahid, Bartz, Jamie, Bhat, Sam, Portelinha, Fernando, Alfaro, Marolo C. (2025) Wet front movement and capillary rise testing of a wicking non-woven geotextile component in GEO2025. Ottawa, Ontario: Canadian Geotechnical Society.

@inproceedings{Martins_GEO2025_42, author = {{Martins, Gabriele}, {Hassan, Md Zahid}, {Bartz, Jamie}, {Bhat, Sam}, {Portelinha, Fernando}, {Alfaro, Marolo C.}}
title = {Wet front movement and capillary rise testing of a wicking non-woven geotextile component }
booktitle = {Proceedings of the 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference}
year = {2025}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
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