Erosion Control and Revegetation Geotextiles

Erosion control geotextiles protect disturbed soil surfaces from rainfall impact, surface runoff, and wind erosion during vegetation establishment on slopes, channels, and construction sites. Erosion control blankets (ECB) are single-use biodegradable products from straw (250–400 g/m², 70% straw + 30% coconut net, 1–2 year lifespan), jute (400–600 g/m², 2–3 years), coir (400–900 g/m², 3–5 years), or wood excelsior (250–350 g/m², 1–2 years) providing permissible shear stress of 35–100 N/m² (ASTM D6460 flume test). Turf Reinforcement Mats (TRM) are permanent non-degradable products from PP, nylon, or PET three-dimensional matrix (500–900 g/m², thickness 10–20 mm, permissible shear stress 200–400 N/m²) providing long-term erosion protection in high-velocity channels (flow velocity 3–6 m/s) where vegetation alone is insufficient. Hydraulic erosion control products (HECP) — hydromulch with crimped cellulose fibre (50–80 g/m²) + tackifier (guar gum or psyllium 5–15 g/m²) — are spray-applied for large area revegetation at 100–500 m³/ha. Silt fences (woven PP, O₉₀ 0.3–0.6 mm, tensile strength 0.9–4.5 kN/m, ASTM D5141) control sediment-laden runoff from construction sites meeting NPDES stormwater permit requirements. Global erosion control product market exceeds $1.4 billion.