Road Surface Rehabilitation

A paved road surface, commonly constructed of bituminous material, should provide a durable, even running surface with adequate skid resistance which is able to withstand the effects of weather. When the road surface condition becomes poor or defective, rehabilitation or resurfacing work is needed to restore the pavement surface to the required level of service.

The surface course may become worn or damaged overtime due to ageing, weathering and the action of road traffic. Potholes, rutting, cracking, deformation, polishing and fretting are just some of the common failures associated with bituminous road surfaces and any widespread defects will require rehabilitation.

There are several different types of bituminous materials suitable for road surface rehabilitation or resurfacing work. The choice of material and technique will depend on several factors including road function/classification, geographical location, environmental conditions and climate, performance requirements and the availability and cost of resurfacing plant and road surfacing materials such as aggregate, binder and filler.

For more information on restoring or improving the road surface’s resistance to skidding refer to the Skid Resistance page.

  • Can provide an even running surface free from major defects and hazards.
  • Can provide a road surface with a high resistance to skidding, helping to reduce loss of control and rear-end type crashes.
  • Can increase pavement strength, weatherproofing and extend life of pavement structure.
  • Provides the opportunity to fix other road surface problems, such as crossfall and drainage.
  • Provides the opportunity for adding or replacing road surface delineation such as painted markings or reflective road studs.
  • Be aware that improved running surfaces may lead to an increase in vehicle operating speeds.
  • The choice of road pavement design, surfacing materials, design mix, and aggregate properties should be carefully considered.
  • Ensure appropriate texture depth, individual aggregate properties such as Polished Stone Value (PSV) and the Skid Resistance Value (SRV) of the road surface is suitable for the location and expected traffic use.
  • Weather conditions during construction of bituminous surface courses can affect the laying operation and subsequent performance.
  • Temporary traffic management at road works sites must be carefully designed and managed to ensure the safety of all those who may be affected including site operatives (road workers), road users, members of the general public and local residents.

Benefits

  • Can provide an even running surface free from major defects and hazards.
  • Can provide a road surface with a high resistance to skidding, helping to reduce loss of control and rear-end type crashes.
  • Can increase pavement strength, weatherproofing and extend life of pavement structure.
  • Provides the opportunity to fix other road surface problems, such as crossfall and drainage.
  • Provides the opportunity for adding or replacing road surface delineation such as painted markings or reflective road studs.

Implementation issues

  • Be aware that improved running surfaces may lead to an increase in vehicle operating speeds.
  • The choice of road pavement design, surfacing materials, design mix, and aggregate properties should be carefully considered.
  • Ensure appropriate texture depth, individual aggregate properties such as Polished Stone Value (PSV) and the Skid Resistance Value (SRV) of the road surface is suitable for the location and expected traffic use.
  • Weather conditions during construction of bituminous surface courses can affect the laying operation and subsequent performance.
  • Temporary traffic management at road works sites must be carefully designed and managed to ensure the safety of all those who may be affected including site operatives (road workers), road users, members of the general public and local residents.

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Treatment Summary

Costs
Medium
Treatment life
10 years - 20 years
Effectiveness
25-40%

References

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