Reinforced Ralumac - with the addition of steel mesh reinforcement

 
 

Ralumac with Mesh

Mesh Track is a steel reinforcing overlay for cracked or deformed roads, which has been successfully used for some years. Used in combination with Ralumac it can deal with problems such as reflective cracking, slippage, deformation or differential movement.

Application : The galvanised steel mesh is laid directly onto the surface of the road which should be cleaned. However, if there are deep deformations in the road surface or heavy damage such as rutting then a regulating layer should be applied first. The mesh is unrolled onto the surface and flattened to it by a roller. The mesh is then fixed using hilty type nails after which Ralumac is applied. Once Ralumac has hardened then Asphalt or Bitmac can be laid to a minimum thickness of 50mm. Depending on design a second layer can be applied. Mesh Track is available in two grades which limits deformation in an overlay to a minimum.
 
     
 

 

 

In some peat roads severe cracking can be observed due to large variations in seasonal moisture content. To rectify this problem one possible solution is to excavate to a significant depth and replace with a bituminous material, this can be a costly process. A cheaper alternative is to reinforce the existing surface with a steel mesh which provides significant strength to the existing surface.

This is tacked to the road surface with ralumac and at least a further 50mm of Bitmac is applied. Several test sites have shown the steel reinforcement to be superior to other reinforcement materials.

The woven hexagonal wire netting, manufactured out of heavy galvanised steel wire, is reinforced at regular intervals by transverse twisted steel wire strands, interwoven into the mesh. The construction of Mesh Track allows the product to be securely tensioned whilst deformation is prevented by the transverse wire strands.

  
  Examples of typical peat roads (mouse over)
Makeup of steel reinforcement overlay
  

 

Benefits
Main Features
Transverse reinforcement guarantees an even load distribution.
Limits deformation in an overlay to a minimum.
The asphalt/bitmac aggregates are locked solidly into the large hexagonal mesh.
Absorbs the tensile stresses beneath the asphalt layer
The Ralumac offers extra elasticity to the interface and better absorbs the strain in overlays.
Locks asphalt aggregates into the meshes of the netting (compartmentalisation-interlock)
Mesh track is flexible and easy to lay.
Ensures optimal distribution of the load.
Steel is intrinsically much stronger as a reinforcing material than plastic, glass, fibre etc.
Provides extra toughness to the overall structure.

 

Reinforced Ralumac - with the addition of fibres

 

Ralumac with Fibres

Ralumac with Fibres is the ultimate cold laid Asphaltic material incorporating polymer modified binder, fibres and high quality aggregate. Specially designed and developed for highly stressed roads which require a long lasting and stable surface.

  
 
 

Ralumac with fibres on a highly stressed roundabout

  

Fibres are added to the final layer of Ralumac to provide a reinforcement which not only improves tensile strength but also improves texture. This is normally applied to highly stressed sites such as roundabouts or steep carriageways for improved braking perfomance. Ralumac with fibres can be laid with a single layer of material on many roads which have a good shape ( and therefore a regulating layer is not required ) or where traffic volumes are low. Coverage rates will vary accordingly.

  

 

Technical Information
Definition :
A cold applied 0/6mm wearing course which incorporates a polymer modified bitumen emulsion and fibres with high quality aggregates.
Aggregate :
High quality coarse and fine aggregates blended to a proprietary graded specification.
Properties:
Minimum PSV 60
Colour :
Black
Filler / Additives:
Ordinary Portland Cement and fibre
Texture Depth :
Type : Positive
Initial : 1.5mm to 2.0mm
Thickness and application rates
Application Process
Typical thickness: 16mm Application Process : Via self-propelled purpose built. Laying box is articulated and includes variable width and automatic thickness control
Typical coverage rate: 24kg/sq.m Suitable Sites : Heavily trafficked roads, busy urban thoroughfares, motorway hard shoulders and steep carriageways.

 

 

 

Ruts are the sure sign that the ever increasing number and weight of heavy vehicles are slowly breaking down our road structures. The immediate response before the seal is broken and greater damage is caused is to fill, level and eliminate the rut. Over the past 35 years Ralumac has proven in Ireland and many countries to be the tough economical solution to a major problem.

Ralumac is laid in two layers. The first layer/coat can take out ruts up to 75mm, if greater depths are required a second base layer can be applied followed by a wearing/top coat giving an excellent riding surface which is waterproof with great texture. Solve your rut problem with Ralumac.

For highly stressed sites where rutting is an obvious problem, the best solution is to use Ralumac with fibres. This will restore the profile of the road and provide a significant reduction in further rut resistance.

 

ICB EMULSIONS LTD.  AT THE FOREFRONT OF HIGHWAY TECHNOLOGY FOR OVER 75 YEARS