The operating principle of slipform paving

Slipform pavers have become indispensable in concrete paving because of their unrivalled efficiency in the production of concrete road pavements. The track-mounted all-rounders are also masters in the production of a countless range of monolithic profiles.

Inset application

When paving in inset application, the concrete is delivered by trucks and dumped ahead of the slipform paver. It is spread by an excavator or second paver when working at large paving widths. Depending on the paver model used, the material is then distributed evenly across the full paving width by a spreading auger or spreading plough. The robust paving mould slipforms the concrete pavement while travelling over the previously distributed concrete material. Electrical vibrators emitting high-frequency vibrations ensure optimum compaction of the concrete during the slipforming process. Tie bars and dowel bars are inserted into the freshly paved concrete automatically. Last but not least, a finishing beam and super smoother put the finishing touches to the new pavement.

Offset application

Concrete mixers are typically used for delivering concrete into the slipform paver’s receiving hopper when paving in offset application. The concrete is transported to the offset mould in a continuous operation either via a slewable charging conveyor or via a slewable feeding auger. Electrically or hydraulically driven vibrators are installed in the mould in accordance with customer specifications. They are capable of compacting concrete material of many different grades uniformly by means of high-frequency vibrations. The paving mould produces the monolithic profile while the slipform paver keeps moving forward at a continuous advance rate, producing a concrete structure of uniform, superior quality and excellent finish.