Uniaxial & Biaxial Geogrids - Road Base & Embankment Reinforcement India

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Geosynthetics & Civil InfrastructureASTM D6637IS 16352

Auroguard supplies HDPE uniaxial geogrids and polypropylene (PP) biaxial geogrids for road subgrade reinforcement, embankment on soft soils, steepened slopes and mechanically stabilised earth (MSE) retaining walls. Uniaxial geogrids offer very high tensile strength in one direction (40–200 kN/m) for wall and slope reinforcement. Biaxial geogrids distribute load in both directions (15–40 kN/m) for subbase and sub-grade reinforcement, allowing thinner granular layers and extending pavement life on weak subgrades. Punch-drawn from virgin HDPE or PP with integral junctions — no separate welding. Widely specified on NHAI four-laning and MoRTH road improvement projects across eastern India.

Technical Specifications

ParameterUniaxialBiaxial
MaterialHDPE virginPP virgin
Tensile Strength MD40–200 kN/m15–40 kN/m
Tensile Strength CMD5–15 kN/m15–40 kN/m
Aperture Size15×220mm25–40mm sq.
Junction Efficiency≥ 93%≥ 93%
Roll Width1.0m / 1.3m3.0m / 4.0m
Roll Length50m / 75m50m / 100m
StandardASTM D6637, IS 16352, GRI-GG1

Frequently Asked Questions

What is the difference between uniaxial and biaxial geogrids?
Uniaxial geogrids are designed for loading in one direction (40–200 kN/m in one axis) and are used in retaining wall and slope reinforcement. Biaxial geogrids have equal strength in both directions (15–40 kN/m) and are used for road subgrade and embankment base reinforcement.
Which geogrid is specified for NHAI road subgrade reinforcement?
NHAI and MoRTH specifications typically call for biaxial geogrids compliant with IS 16352 and ASTM D6637 for subgrade reinforcement. Aperture size and tensile strength are selected based on subgrade CBR and design traffic loading.
What is the aperture size of biaxial geogrids for road base?
Biaxial geogrids for road base typically have aperture sizes of 25–40mm × 25–40mm, which provides optimal interlocking with aggregate base course material and maximises confinement and load distribution.
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