What Is Geotextile vs. Geogrid Reinforcement?

Geotextiles

The woven (the strength's — the reinforcement; the filtration's), the nonwoven (the drainage's — the filtration; the protection's), the functions (the separation — the fines'; the filtration — the soil's; the reinforcement — the moderate), and the use (the roads' — the subgrade's; the walls' — the GRS's).

Geogrids

The biaxial (the roads' — the base's; the interlock), the uniaxial (the walls' — the MSE's; the long-term), the interlock (the aggregate's — the confined; the stiff), and the use (the MSE — the walls'; the slopes'; the pavements').

Selection

The function (the separation's — the textile; the reinforcement's — the grid), the soil (the fines' — the textile's; the aggregate's — the grid's), the design (the NCMA's — the walls'; the AASHTO's — the roads'), and the QC (the placement — the taut; the overlap's). The textile separates — the grid reinforces.

The bottom line

Use geotextiles for separation/filtration (woven for strength, nonwoven for drainage) and geogrids for reinforcement (uniaxial for MSE walls, biaxial for pavements) — design per NCMA/AASHTO.

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