- Slipform Kerbing
- Slipform Kerb and Channel
- Concrete Footpaths / Shared Pathways
- Slipform Concrete Barrier Walls
- Concrete Roads
- Concrete Drains
“In Australia, around 90% of kerb and channel is poured with dry mix extrusion machines. Unfortunately, unless the correct processes and procedures are followed, operator error can result in a number of problems, probably the most frequent being poor concrete quality resulting from insufficient water in the concrete mix to provide the required hydration for the correct mixing of the cement and the aggregates.”
THE SLIPFORM SOLUTION
The concrete is a low slump approx (40mm) vibrated to ensure that the right density and compaction is achieved. As the machine moves, the mould slips over the vibrated concrete – hence the term ‘slipform’ (no slurry used). Changes in the concrete properties will alter the results of the kerbing process. Hence, uniformity is the key in the slipform process. Uniformity in design (mix and geometrics), logistics (concrete supply and delivery), and energy levels (vibration and movement) are all vital for satisfactory machine performance and kerb results.
KELCRETE believes that the slipform process addresses and alleviates all of these issues, through two key control measures, namely:
- If the concrete is not at the correct slump or the mix design is wrong, the machine will not produce a kerb; and
- If the vibrators are not working in the mould (concrete compaction), the slipformer will not produce a kerb.
In other words, the machine operates its own QA system, “Unless all factors are correct, the machine will not produce a kerb.”
Times have considerably changed in the road building industry in the last 30 years with advances in machinery and technology. Road building has become more efficient in its process and has substantially reduced construction time hence the need for a kerb product which can stand up better to the demands of the modern day road building industry.
STRENGTH AND DURABILITY
Slipform Kerbing is considerably stronger and more durable than Dry Extrusion Kerbing giving the customer a product that can withstand the punishment dealt out on construction sites by Trucks, Rollers, Graders etc.
Slipform kerbing is excellent in the reconstruction of old kerbing as there is no need to over excavate the width of box to make room for the standard dry mix kerb machine. The slipform process allows the machine to stay up on the existing roadway and place the mould down into the position of the old kerb, saving thousands of dollars in excavation costs.
- Longer design life
- Reduces replacement construction costs
- Better bonding to sub-grade and asphalt surfaces
- Better curing and joint construction / less shrinkage
- Significant OH&S benefits for kerb team members with reduced lifting and bending requirements
Slipform kerb can be formed to any practical shape or height required and can be placed over dowels or can have reinforcing bars inserted as it is placed. Under guard rail, over existing kerbs, against objects, footpaths, bikeways there is no need for boxing, it is continuously poured by machine.
For all enquiries realted to slipform machine laid kerbs, kerb and channel, barrier walls, footpaths, bikeways, dish drains , call Shaun Kelly on 0418 736 792.
Download our fact sheets about Slipform Kerbing for further information: