Slope Erosion Mat (TRM) - Synthetic Turf Reinforcement for Highway Embankments

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Geosynthetics & Civil InfrastructureASTM D6460Permanent Erosion Control

Auroguard Slope Erosion Mats (Turf Reinforcement Mats / TRM) are permanent three-dimensional synthetic erosion control mats manufactured from UV-stabilised polyamide (nylon) or polypropylene filaments heat-fused into an open, resilient matrix. Installed on slopes and in high-velocity drainage channels, the TRM's 3D structure entangles soil particles and plant roots, providing erosion protection during vegetation establishment and permanent reinforcement after vegetation matures. TRMs extend the permissible flow velocity from approximately 1.5 m/s (unreinforced grass) to 6–7 m/s, making them suitable for steep embankments and large-diameter drainage channels. Applied on NHAI highway embankments, railway embankment slopes, irrigation canal side slopes, and stormwater detention basin linings. Installed with sod staples or U-pins at specified intervals.

Technical Specifications

ParameterSpecification
MaterialUV-stabilised polyamide (nylon) or PP filament
Mass per Unit Area≥ 500 GSM
Mat Thickness15–25mm (3D lofted structure)
Tensile Strength (MD/XMD)≥ 5 kN/m (ASTM D6818)
Max Permissible Flow Velocity6–7 m/s vegetated (ASTM D6460)
Open Area≥ 75% (for seed germination)
Roll Width2.0m
Roll Length25m / 50m

Frequently Asked Questions

What is a Turf Reinforcement Mat (TRM) used for?
A TRM is a permanent 3D erosion control mat that reinforces grass root systems on slopes and channels. It prevents erosion during vegetation establishment and provides long-term reinforcement, extending permissible flow velocity from 1.5 m/s (grass alone) to 6–7 m/s.
How is TRM different from coir erosion control blanket?
Coir blankets are biodegradable (2–5 years) for temporary protection while vegetation establishes. TRMs are permanent synthetic mats providing long-term reinforcement. TRMs are specified for high-velocity channels, steep slopes (>2:1), and permanent infrastructure embankments.
Does Auroguard supply TRM for NHAI highway embankments?
Yes. Auroguard supplies ASTM D6460-compliant 3D polyamide TRMs for NHAI highway embankment slope protection, canal lining, and high-velocity drainage channel erosion control across eastern India.
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