GEOSYNTHETICS: Geonets and Geocomposites for Foundations Engineering.

Geonets are three-dimensional netlike polymeric materials used for drainage (i.e., flow of water within the geosynthetic). Figure 17.5 shows a photograph of a geonet. Geonets are usually used in conjunction with a geotextile and/or geomembrane, hence geonets are technically a geocomposite.

Depending on the particular project requirements, different types of geosynthetics can be combined together to form a geocomposite. For example, a geocomposite consisting of a geotextile and a geomembrane provides for a barrier that has increased tensile strength and resistance to punching and tearing. Figure 17.6 shows a photograph of a geocomposite consisting of a textured geomembrane, geonet, and geotextile (filter fabric).

Photograph of a geonet.
FIGURE 17.5 Photograph of a geonet.


FIGURE 17.6 Photograph of a geocomposite. The geocomposite consists of a geonet having
a textured geomembrane on top, and a filter fabric (geotextile) on the bottom.

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