Hydraulic compatibility of geotextile containers confining dredged sediments

Geotextile containers have been increasingly used in dewatering of high water content geomaterials. The hydraulic compatibility of a geotextile with the contact soil is an important issue and should be considered in geotextile container design. Clogging becomes especially important in their design, since the physical nature of fine-grained geomaterials that are in contact with these two-layer geotextile systems usually promotes clogging. This paper presents the results of a study conducted to investigate the long-term clogging of two-layer geotextile systems used in designing geotextile containers. The results indicated that the use of a two-layer nonwoven/woven geotextile rather than a single-woven geotextile significantly improved filtration performance of a geotextile container.