Geosynthetics Classification by Physical Form
The figure provides a general geosynthetics classification based on physical form. As shown, these materials include solid and perforated plastic sheets, plastic pipes, various textile structures, and combinations of these that form a subcategory known as geocomposites.
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Strictly speaking, the term geosynthetics refers to synthetic polymer-based materials. However, when considering the geotextile category, natural fibers are as important as synthetic fibers, so the subcategory “natural geotextiles” is loosely included in the general classification.

Most non-textile geosynthetics are used together with geotextiles, so it is more informative to consider the functions, structures and properties of all material types. This helps readers understand the role geotextiles play, whether used with other materials or in their place, across various geotechnical applications.