Like all the best ideas, the formation of in-situ concrete structures seems a relatively simplistic process and may be in theory but requires a number of elements to be fine-tuned through expertise to achieve the premium result. Commencement of the process sees set-up of a series of string along which the machine’s sensors run. Attention to detail at set-up stage is crucially important if the most stringent specification standards are to be met. In the case of barrier wall, they can be installed in a number of different situations. The most common approach is to construct the wall over the HDM layer during motorway construction but can also be delayed until the initial surfacing layers are in-situ.

The process involves feeding kerbmix concrete from the ready mix truck via an auger into a hopper connected to a mould. The mould is pre-fabricated to the required profile. The auger’s heavy-duty design gives it plenty of torque to move the material required for big jobs and gives it extra longevity.
 The concrete is 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’. Any changes in the energy the curber applies to the concrete or changes in the concrete properties will alter the results of the curbing process. Hence, uniformity is key in the slipform process.

Distribution of concrete to the curber must be continuous to meet the demands of high production. The machine is equipped with electronic sensors, which run on a preset guideline mounted on steel pins and brackets- this defines the vertical and horizontal alignment of the kerb being placed.

Slipform Process

O’Regan Slipform Kerbing Ltd

A troweling section on the rear of the mould finishes the concrete. O’Regan Slipform Kerbing Ltd uses the Power Curber 5700-C, the newest generation of slipform curb and gutter machines. The machines compact size and versatility allow us to achieve high levels of productivity. It features a smart AMP Control System that offers simplicity of analog and digital controls. The operator’s panel displays cord, sensor or amplifier problems and adjusts accordingly.