Custom-made precast concrete components.

Work more rationally with Vollert systems.

Heating plant

As part of the post-treatment of precast concrete parts, they are brought into an insulated chamber after the concreting process. The temperature in the chamber is kept at around 40°C with the aid of the heating plant. As a result, the concrete begins to react very quickly and will harden sufficiently in the course of a working shift to allow it to be transported out of storage. Often, multi-shift operation is only possible by having a heating plant.

The chamber temperature is measured with a sensor that determines the actual temperature, and is controlled by a thermostat that compares the actual temperature against the set temperature and controls the amount of heat. The desired temperature is maintained 24 hours a day during the production time. Heat loss through the chamber, ceiling or doors are compensated for by the heating plant.

There is a choice of two different heating plants:
1. Heating with hot air that is blown into the chamber. The cold air is sucked out of the chamber accordingly.
2. Heated by finned pipes or heating coils located in the floor and/or at the sides. In this case, the heating medium is usually thermal oil that is heated up to 300°C.

The source of energy for the heating can be hot water (such as from geothermal heating), oil or gas.