Roads, Pavements & Trafficked Areas

Roads, Pavements & Trafficked Areas

Speed up construction and reduce costs for paved and unpaved roads, increase pavement life and reduce maintenance needs.

Strengthening the unbound layers enables a reduction in layer thickness by reducing the volume of non-renewable aggregates and other pavement materialsthen costs, time, and emissions are reduced, contributing to sustainability objectives.  

Tensar’s geogrid technology is 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.  
Image of Flexible Pavements

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 geogrid improves the overall stiffness of the paved structures that support traffic by interlocking with aggregate and confining particle movement to create a mechanical stabilised layer (MSL). This leads to enhanced trafficking performance, minimising maintenance and rehabilitation common to flexible pavements.   

Surface cracking contributes to flexible pavement deterioration but Tensar asphalt interlayer products installed below the surfacing layer become 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.  

Image of Rigid Pavements

Rigid Pavements

Tensar can help you build stronger, longer-lasting rigid pavements. Building a rigid pavement over a mechanically stabilised layer (MSL) incorporating Tensar geogrid 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.  

Image of Heavy Duty Pavements

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 centers, and heavy truck corridors. 

Heavy duty pavements frequently deal with slow moving and static traffic load with ultra-high load magnitude. Surfacing may 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. 

Image of Unsurfaced Roads

Unsurfaced Roads

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

During construction, weak or variable subgrade soils need protecting 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 are designed to interlock with and confine the aggregate and create a mechanically stabilised layer (MSL) that evenly distributes the load, increases bearing capacity and ensures longer-term stability and performance. Strengthening the aggregate layer enables layer thickness to be reduced. By reducing the volume of non-renewable aggregates, then costs, time, and emissions are reduced, contributing to sustainability objectives.

Image of Asphalt Reinforcement

Asphalt Reinforcement

Surface cracks in the asphalt propagate, allowing 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 those 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 geogrids and composites designed to interact with the bitumen bound layer, to add tensile stiffness, limit strains and reduce 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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Design with confidence, from anywhere.

The TensarPave design program allows the design engineer to rapidly produce pavement designs, for both paved and unpaved roads, using Tensar geogrids to stabilise the unbound layers in order to maximise the costs benefits that can be attained by reducing the pavement thickness.

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