The key components of hot recycling

Infrared heating system

The damaged road surface is heated by individually engageable infrared heating elements. They are operated with propane gas that is carried on the machine in gas tanks.

Variable scarifier unit

Rotating shafts fitted with carbide metal tools arranged in the shape of a helix scarify the preheated road pavement to the required working depth. Their overlapping arrangement behind one another permits the working width to be adjusted continuously. The central shaft passes the scarified pavement material to the compulsory mixer.

Twin-shaft compulsory mixer

The scarified material, virgin aggregate and binding agents are blended in the continuous mixer to form a new, homogeneous asphalt mix. The mixing chamber is lined with highly wear-resistant material.

Bitumen injection system

Bitumen is carried on the machine in a heated binding agent tank. A microprocessor-controlled pump delivers the bitumen via heated feed lines from the recycler's tank to the compulsory mixer where it is injected in precisely metered quantities.

Paving screed

The machine's sensor-controlled spreading auger distributes the recycled mix evenly in front of the paving screed. A Vögele screed equipped with tamper and vibrator places the recycled pavement material in accordance with the specified profile and compacts it to produce a compact layer.

Remix Plus

Remix Plus requires the recycler to be equipped with a second paving screed. Conveyors deliver virgin mix from the receiving hopper to behind the first paving screed, where it is distributed evenly across the full working width by a second spreading auger. Both layers are then compacted by the second paving screed.

This method enables a thin surface course of high quality and specific properties to be placed on top of the remixed layer (hot-in-hot application).