The DOUBLE TWIST STEEL WIRE MESH size is 80 by 100 mm (nominal), the wire is protected against corrosion by a zinc coating, The mesh thickness varies between the 2.4 mm wire diameter up
to 9.2 mm where the transverse rod passes through the double twist.
The ROAD MESH APPLICATIONSRoad Mesh was initially introduced to intercept the reflected cracks generated by
jointed concrete pavements. Wider use of the product and further research have found
the steel mesh being used more widely and for a greater number of solutions.
The steel mesh is best suited to be used for the following applications:
- Fatigue cracking and overlays: if a new pavement or if a new overlay is installed
over a fatigued/cracked pavement, cracks will propagate to the surface after a very short
traffic period. Road Mesh is introduced to extend the life of the overlay by absorbing
the horizontal tensile stresses resulting from the existing cracks and by traffic loads.
- Road widening: when roads need to be widened, differential settlement cracks
occur at the junction between the old and new pavement structures. Road Mesh is
introduced to bridge the junction to absorb the crack stresses caused by the differential
settlement: the effective interlock with the asphalt aggregate matrix ensures the
optimum contribution of the reinforcement; a minimum of 1 m either side of the joint is
required.
- Surface rutting: under repeated heavy vehicle traffic, the asphalt surfacing is
exposed to repeated shear forces which result in shear slip circles and ultimately leads
to shoving. Road Mesh is installed at the base of the overlay, for a layer thickness more
than 60 mm, thus intersecting the shear slip circle and ultimately reduces the surface
rutting.
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