Operating principle in situ

Cold recycling with integrated paving screed

Where specified, cement is pre-spread by a STREUMASTER binder spreader which is followed by water and binder tanker trucks. The milling and mixing rotor installed in the W 240 CR / W 240 CRi granulates the asphalt layers. The pre-spread cement is mixed in at the same time while water and bitumen emulsion or foamed bitumen are injected into the mixing chamber via injection bars. The recycled construction material is transported to the rear of the machine via the primary conveyor and paved true to grade and slope by the VÖGELE paving screed with integrated spreading auger. Final compaction of the material is then effected by HAMM rollers.

  • W 240 CR / W 240 CRi: Cold recycling with integrated paving screed 3:05 Min.

    W 240 CR / W 240 CRi: Cold recycling with integrated paving screed

Recycling material with the W 240 CR / W 240 CRi (Down-cut)

  1. Pre-spread cement

  2. Primary conveyor for material transfer to the paving screed

  3. Spreading auger

  4. Injection bars for water and binders

  5. Milling and mixing rotor

  6. Damaged asphalt layer

  7. Paving screed

The robust milling and mixing rotor granulates the damaged asphalt pavement. The granulated material is mixed with injected binders and water in the mixing chamber, thus creating a new homogeneous mix in an in-situ process.

Due to the helical design of the milling and mixing rotor, the recycled mix is conveyed towards the centre and subsequently transported to the paving unit via the primary conveyor. The spreading auger distributes the material evenly ahead of the variable paving screed which then paves it true to grade and slope.

Cold recycling with integrated rear loading

Where specified, cement is pre-spread by a STREUMASTER binder spreader which is followed by water and binder tanker trucks. The milling and mixing rotor granulates the asphalt layers. The pre-spread cement is mixed in at the same time while water and bitumen emulsion or foamed bitumen are injected into the mixing chamber via injection bars. The recycled construction material is picked up by the conveyor system and transported right into the material hopper of the VÖGELE asphalt paver for placing. Final compaction of the material is then effected by HAMM rollers.

  • W 380 CR / W 380 CRi: Recycling with discharge conveyor and paver 3:05 Min.

    W 380 CR / W 380 CRi: Recycling with discharge conveyor and paver

Recycling material with the W 380 CR / W 380 CRi (Down-cut)

  1. Milling and mixing rotor

  2. Damaged asphalt layer

  3. Injection bars for water and binders

  4. Primary conveyor and discharge conveyor for material transfer to the asphalt paver

  5. Pre-spread cement

The robust milling and mixing rotor granulates the damaged asphalt pavement. The granulated material is mixed with injected binders and water in the mixing chamber, thus creating a new homogeneous mix in an in-situ process.

Due to the helical design of the milling and mixing rotor, the recycled mix is conveyed towards the centre and subsequently transported to the material hopper of the asphalt paver via the conveyor system comprising primary and discharge conveyor. The asphalt paver then paves the material true to grade and slope.

More applications

Lateral premilling and recycling with loading conveyor and paver

  • W 240 CR / W 240 CRi: Lateral pre-milling and recycling with discharge conveyor and paver 3:05 Min.

    W 240 CR / W 240 CRi: Lateral pre-milling and recycling with discharge conveyor and paver

Cold milling with discharge conveyor and truck

Key benefits of high-performance cold recyclers

As a pioneer in cold recycling, WIRTGEN is passionately committed to this environmentally-friendly and economically efficient method. The technological lead we have gained in this complex sector enables us to maintain the functional properties of roads in the long term.

Recyclers are capable of high production rates that significantly reduce construction times compared to most alternative rehabilitation methods.

Recyclers are capable of high production rates that significantly reduce construction times compared to most alternative rehabilitation methods.

The full recycling operation can be accommodated within the width of one traffic lane. On roads with two lanes, recycling is usually undertaken in half-widths with one-way traffic accommodated on the opposite half during working hours.

On roads with two lanes, recycling is usually undertaken in half-widths with one-way traffic accommodated on the opposite half during working hours.

Consistent, high quality mixing of the in-situ materials with water and stabilising agents is achieved using modern recyclers. Micro-processor controlled spraying systems ensure the accurate addition of fluids (water and stabilising agents).

Consistent, high quality mixing of the in-situ materials with water and stabilising agents is achieved using modern recyclers. Micro-processor controlled spraying systems ensure the accurate addition of fluids (water and stabilising agents).

Market-leading and cutting-edge products for the Road and Mineral Technologies business sectors are constructed at the WIRTGEN brand headquarters in Windhagen, Rhineland-Palatinate. With its innovative, high-performance and cost-efficient products and technologies for cold milling, soil stabilization, hot and cold recycling, concrete paving and surface mining, WIRTGEN leads the world market in road construction and repair, as well as in mining natural rock and pay minerals.

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