Keeping the pavement alive

High levels of traffic loading put enormous strain on the road network's overall capacity, testing the physical capacity of its pavements to breaking point. Pavements are exposed to repeated, highly focused and damaging loads, causing premature aging and failure of road construction. Reinforcing products included within the construction layers can mitigate these damaging effects and produce beneficial results such pavement strengthening, increased working life, reduced deflections, less rutting and fatigue cracking and the use of fewer construction materials. The geotechnical industry has developed a range of geogrid and geotextile based reinforcement systems to cater for every permutation of site condition and loading requirement. Bound pavement and unbound pavement reinforcement requirements and techniques are explained. The composition and use of Roadmesh is described. Comprising a double twist wire reinforcing mesh, it is sandwiched between bituminous pavement layers. The pavement construction then works as a cohesive mass, with the traffic loading being spread over a wider footprint which results in a less damaging effect. Case studies of reinforced "floating roads" in the Scottish Highlands and of the A4144 road in Oxfordshire are described.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01141142
  • Record Type: Publication
  • Source Agency: TRL
  • Files: ITRD
  • Created Date: Sep 30 2009 9:05AM