Heating machine

Heating machine with folded heating element fields

A heating machine is in road construction used to asphalt over a large area to warm up in a gentle way. This is particularly necessary when old or damaged traffic areas are to be repaired using the hot recycling process. However, the construction machine is also suitable for drying and preheating documents.

Furnishing

The self-propelled machine consists of a running gear with pneumatic tires including a driver's cab and control panel. In the middle there is a liquid gas tank system that ensures the generation of heat. Fold-out heating fields with infrared radiators are attached to both ends of the machine. Additional heating fields can be provided below or to the side of the tank system. The width of the heating fields (mostly lane width ) and the distance between the heating fields and the asphalt surface can be adjusted.

application

In the hot recycling process, the heating machine moves at the beginning of the work train. The asphalt is gently warmed up to 180 ° C with the heating machine and thus turned into a soft state (prerequisite for the further work steps). More than 180 ° C should not be reached in order to avoid damage to the bitumen . The amount of heating output depends on the ambient temperatures and the desired processing depth.

When operated with a lower heating output, the heating machine is also suitable for drying off damp surfaces or for preheating cold surfaces. In this way, for example, asphalt paving can be carried out in accordance with the rules even in less favorable weather conditions (temperatures below 5 ° C or a damp surface).

See also

• List of construction machinery and construction equipment
• List of construction machinery manufacturers

Norms and standards

Germany

• Leaflet for the reshaping of asphalt base courses (M RF)

Web links

Commons : heating machine  - collection of pictures, videos and audio files

• Maintenance of asphalt road pavements

Individual evidence

1. ^ Gerhard Drees : Construction machines and construction methods . Expert-Verlag, Renningen 2002, ISBN 3-8169-2060-8 , p. 191 .
2. ^ Felix Kern: The fascination of road construction . Motorbuch Verlag, 2005, ISBN 3-613-02499-3 , p. 159 .