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What is Uniaxial Plastic Geogrid ?

Uniaxial geogrid is a kind of geosynthetics. This product is designed for roadbed and pavement improvement. A one-way stretch structure characterizes it. This unidirectional structure forms a compact interlock system. Uniaxial geogrid has good flexural stiffness and high strength. It can effectively reinforce soil structure and prevent soil from displacement. Uniaxial geogrid largely increases the durability of subgrade structure and prolongs the road life. Uniaxial geogrid can greatly reduces aggregate fill thickness. It provides a cost-effective solution for civil engineering and geotechnical projects.

Applications

  • Railways, Highways, Soft soil foundations
  • Airport runways, Car parks, Embankments
  • Construction haulage roads, Patios, Farm tracks

Testing Standard

  • GRI GM 6/9/11/13/14/19
  • ASTM D792/D1004/D1238/D1505/D1603/D3895
  • ASTM D4218/D4833/D5199/D5397/D5596

Technical Specification

Width: 1-6 m, Material: High-quality HDPE/PP. Price from $0.5 SQM

PP Uniaxial Stretched Geogrid
Item Tensile Strength (≥) KN/M Tensile Strength at 2% Elongation (≥) KN/M Tensile Strength at 5% Elongation (≥) KN/MNomianal Elogation
TGD35351022≤10
TGD50501228≤10
TGD80802648≤10
TGD1201203672≤10
TGD1601604590≤10
TGD20020056112≤10
TGD26026073146≤10
The longitudinal and transverse tensile strength are the same.
HDPE Uniaxial Stretched Geogrid
Item Tensile Strength (≥) KN/M Tensile Strength at 2% Elongation (≥) KN/M Tensile Strength at 5% Elongation (≥) KN/MNomianal Elogation
TGD35357.521.5≤11.5
TGD50501223≤11.5
TGD80802140≤11.5
TGD1201203365≤11.5
TGD1601604793≤11.5
TGD20020070140≤11.5
The longitudinal and transverse tensile strength are the same.

How does Uniaxial geogrid work?

If the soil in the area where you will be adding a dense load (such as slabs, railway sleepers, trucks or lorries) is too soft, the pressure will force the soil to warp. A Geogrid will help to secure the soil through compacting the aggregate which furthermore enhances the bearing capacity of the underlying ground. In short, it strengthens the ground and stops it from disappearing in heavy traffic, preventing rutting – etc.

Unlike when the load is introduced to the soil alone, the geogrid forces the heavy load’s pressure to be spread over the entire surface area of the grid, due to the subgrade having strength in both directions. It’s a similar reason to why, if you were walking on thin ice, you are better off laying down to spread your body weight over a larger surface, it’s the same principle here.

This essentially means once the Biaxial geogrid is set out and the heavy load is put in place the soil beneath the grid compacts and the subrade’s strength is further enhanced. This means that it is very cost effective by saving both labour and maintenance expenses. 

Works really well for farm tracks etc or country lanes that lorries drive up and down. It helps to stop the ruts caused by the weight on the tyres which otherwise would need regularly refilling.

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