Geogrids for Roads, Pavements & Trafficked Areas

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Roads, Pavements & Trafficked Areas

Speed up construction and reduce costs with geogrids

Strengthening the unbound layers enables a reduction in layer thickness by reducing the volume of non-renewable aggregates and other pavement materials. Utilising Tensar geogrids in road construction will reduce costs, time spent on projects and carbon emissions contributing to sustainability objectives.  

Tensar’s geogrid technology is primarily used in road construction, however can also be utilised for:

  • Ground and subgrade stabilisation  
  • Capping layer and subbase reduction  
  • Improving performance of paved and unpaved roads  
  • Increasing bearing capacity of heavy-duty pavements
  • Tensar’s asphalt interlayer products mitigate cracking and improve fatigue life of asphalt surfacing
  • Subgrade Stabilisation
  • Flexible Pavements
  • Unsurfaced Roads
  • Paved Roads
  • Flexible Pavements
  • Rigid Pavements
  • Heavy Duty Pavements
  • Unsurfaced Roads
  • Asphalt Reinforcement

Select an Application Feature Paved Roads Flexible Pavements Rigid Pavements Heavy Duty Pavements Unsurfaced Roads Asphalt Reinforcement

Paved Roads

Paved roads and trafficked areas can include either flexible or rigid pavement construction. Flexible pavements are typically surfaced with bituminous bound materials, while rigid pavements incorporate a concrete surfacing.

Both types of pavements require a strong stable foundation, typically one or more layers of unbound aggregate. The strength and stiffness of an unbound layer can be enhanced by incorporating a suitable stabilisation geogrid, leading to an increase in trafficking performance and pavement life.

Over very weak soils a geogrid stabilised layer can be used as an alternative to excavation and replacement, chemical stabilisation, or thick capping layers.

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Flexible Pavements

Flexible pavement structures often fail prematurely because of progressive lateral and vertical displacement, and a weakening of the subgrade and unbound aggregate layers. Tensar geogrids  in pavement construction improve the overall stiffness of paved structures that support traffic. This is achieved  by interlocking with aggregate and confining particle movement to create a mechanical stabilised layer (MSL). Utilising geogrids in road construction leads to enhanced trafficking performance, minimising maintenance and rehabilitation  common to flexible pavements.   

Surface cracking contributes to flexible pavement deterioration, but using  Tensar asphalt interlayer products installed  below the surfacing layer becomes the hidden strength in the road. Crack propagation is inhibited, and fatigue performance enhanced. Pavement performance is improved, and ultimately maintenance and life cycle costs are reduced. 

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Rigid Pavements

Tensar geogrids in pavement construction can help you build stronger, longer-lasting rigid pavements. Building a rigid pavement  over a mechanically stabilised layer (MSL) and incorporating Tensar geogrids  provides greater support than a thicker, aggregate base layer. This results in a more resilient pavement foundation that will not lose strength over time.   

The geogrid interlocks and confines the aggregate base, resulting in less deformation during the pavement’s life. The confinement reduces the potential for particle movement, limiting foundation deformation and contamination of the aggregate base with the subgrade soil.  

Most concrete pavement problems stem from poorly performing joints. Poor load transfer creates high slab stresses, contributing to faulting, pumping and corner breaks. The Tensar geogrid MSL provides a stiff resilient layer, which minimises the potential for differential movements of the concrete surface that initiate faulting and corner breaks. 

Heavy Duty Pavements

Structural design and construction is essential for heavy-duty pavements. Many serve high-stress applications including intermodal, port and loading facilities, airport runways, warehouse/distribution centres, and heavy truck corridors. Heavy duty pavements frequently deal with slow moving and static traffic load with ultra-high load magnitude. They feature a range of surfacing, but most often it will be asphalt, concrete or block paving.  By integrating Tensar geogrids into heavy-duty pavement designs, it is possible to extend the design life of heavy-duty pavements by a factor of three to six times, leading to significant life cycle cost savings. 

Unsurfaced Roads

Most connecting roads, farm to market roads, haul roads, access roads and temporary roads have no paved surface. Or they’ll have a thin, non-structural spray and chip surface for waterproofing and dust control. Unsurfaced roads depend on unbound layers to protect the subgrade and maintain a smooth road surface. 

During construction, weak or variable subgrade soils need protection from further deformation. Post construction, the subgrade must be protected from traffic loading that can lead to deformation of the subgrade and failure of the road. 

Tensar geogrids in road construction are designed to interlock with and confine the aggregate, creating a mechanically stabilised layer (MSL) that evenly distributes the load. Geogrid reinforcement for roads, increases bearing capacity, ensures longer-term stability and performance. Strengthening the aggregate layer with road geogrids enables layer thickness to be reduced. By reducing the volume of non-renewable aggregates, project costs, time and emissions are reduced, contributing to sustainability objectives.

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Asphalt Reinforcement

Surface cracks in the asphalt propagate allows water to ingress, weakening the foundation layer and subgrade, and leading to further deterioration and permanent loss of strength. Asphalt reinforcement reduces reflective cracking in asphalt surfacing and reflective cracking induced by thermal movement of substrates or shrinkage of subsoils. Reinforcement of an asphalt layer can also improve its life by delaying the onset of fatigue cracking. 

Tensar has a range of asphalt interlayer composites and geogrids for roads designed to interact with the bitumen bound layer: to adding tensile stiffness, limiting strains and reducing crack development and size. Composite interlayers comprise a geogrid bonded to a fabric that together provide reinforcement and act as a Stress Absorbing Membrane Interlayer (SAMI) and a moisture barrier.

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Tensar® InterAx® (NX) Geogrids

Our highest-performing geogrid, combining coextrusion, advanced material science, and optimised geometry

Tensar® TriAx® (TX) Geogrids

Multi-axial stabilisation geogrid leveraging hexagonal geometry to achieve higher performance

Tensar® Glasstex®

Glass yarn grid asphalt interlayer product with lightweight installation fabric backing 

Tensar® AX5-GN

Composite asphalt interlayer – high profile multi-axial polypropylene grid factory bonded to paving fabric 

Tensar® AR-GN

Large aperture polypropylene grid and paving fabric composite asphalt interlayer product 

Tensar® Glasstex®Grid-R

Glass filament bundles, bonded to a lightweight non-woven backing fabric

Tensar® GlasstexPatch™

High-stiffness glass yarn grid, stitch bonded to a glass reinforced impermeable bitumen membrane

Geogrids in Road Construction Success Stories

Shropshire, UK

A442 Randley to Strichley

Market: Roads & Highways Application: Flexible Pavements Benefit: Cost Savings, Sustainabilty 

Borders, Scotland

B6357 Saughtree Station

Market: Roads & Highways Application: Asphalt Reinforcement Benefit: Cost Savings, Time Savings, Sustainability

Cheshire, UK

A556

Market: Roads & Highways Application: Flexible Pavements, Subgrade Stabilisation Benefit: Cost Savings, Time Savings, Sustainability

Riga, Latvia

Aleksandra Caka Street

Market: Roads & Highways Application: Asphalt Reinforcement Benefit: Cost Savings

Perth, Scotland

Bertha Cut

Market: Roads & Highways Application: Unsurfaced Roads Benefit: Cost Savings 

Southampton, UK

Dockgate 5

Market: Roads & Highways Application: Flexible Pavements Benefit: Cost Savings, Time Savings

Doncaster, UK

FARRRS

Market: Roads & Highways Application: Flexible Pavements Benefit: Cost Savings, Time Savings, Sustainability

Buckinghamshire, UK

HS2 Colne Valley Viaduct

Market: Rail Application: Working Platforms, Unsurfaced Roads Benefit: Cost Savings, Time Savings, Sustainability

Lithuania

NATO

Market: Military Application: Subgrade Stabilisation Benefit: Cost Savings

King’s Lynn, UK

Orchard Place Housing Scheme

Market: Housing & Residential Application: Flexible Pavements Benefit: Cost Savings, Time Savings 

Owenniny, Ireland

Owenniny Windfarm

Market: Renewables Application: Unsurfaced Roads Benefit: Cost Saving, Sustainability

Sleaford, UK

Sleaford Household Waste Recycling Centre

Market: Commercial & Industrial Application: Subgrade Stabilisation Benefit: Cost Savings, Time Savings, Sustainability

Sweden

Svartnas Wind Power Park

Market: Renewables Application: Unsurfaced Roads Benefit: Cost Savings, Time Savings 

Lincolnshire, UK

Triton Knoll

Market: Renewables Application: Unsurfaced Roads Benefit: Cost Savings, Time Savings, Sustainability

Suwanee, GA

Symphony at Suwanee Creek

Market: Housing & Residential Application: Unsurfaced Roads  Benefit: Time Savings

Rantoul, IL

Rantoul Foods Delivery Roadway Construction

Market: Commercial & Industrial Application: Roads, Pavements & Surfaces Benefit: Cost Savings

Metairie, LA

Heavy Vehicle / Equipment Storage Yard

Market: Commercial & Industrial Application: Roads, Pavements & Surfaces Benefit: Cost Savings

Van Buren Township, Michigan

ITC Corridor

Market: Commercial & Industrial Application: Roads, Pavements & Surfaces  

Whitby, UK

York Potash Processing Plant

Market: Roads & Highways Application: Subgrade Stabilisation Benefit: Cost Savings, Time Savings, Carbon Savings

Gloucestershire, UK

Blockley STW Temporary Haul Road

Market: Roads & Highways Application: Unsurfaced Road Benefit: Cost Savings, Time Savings, Carbon Savings

 

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Geogrids for Roads, Pavements & Trafficked Areas Resources

Article

The benefits of geogrids in trench reinstatement

May 20 2021

Article

What is rutting in roads?

April 15 2021

Article

5 things you need to know about pavement design with geogrids

April 01 2021

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