the slipform paver
At the heart of the operation is the slipform paving machine; typically a three or four tracked prime mover to which the slipform paving mould is attached.
Most slipform pavers facilitate the mould being mounted to either the left or right side or in some cases under the chassis. Ideally construction should progress in the same direction as concrete supply deliveries, therefore in the verge the mould is mounted to the left side (when viewed from the rear) and in the median the right side.
The paver itself is principally a vehicle that conveys concrete from delivery trucks to the hopper and ensures that the paving mould and barrier are correctly aligned.
Alignment of the slipform paver - both line and level, is automated, controlled by a computer and series of electronic over hydraulic sensors typically running on a guidance wire. Larger projects may benefit from wire-free laser alignment.
The paver tracks accommodate uneven ground conditions and can operate at differing levels although firm and reasonably level ground should be provided.
When considering traffic management for slipform barrier construction particular attention must be given to the route taken by concrete supply trucks and the location of the supply truck when discharging onto the slipform paver feed conveyor. It is undesirable for supply trucks to reverse long distances or to have to turn around on site. The paver cannot stand for long without a supply of fresh concrete.
