How it works
The elastic bearing layer under the artificial turf ensures that the force reduction on the artificial turf is provided. Generally the force reduction measured on the artificial turf’s surface should be between 45 to 65 per cent. The lower figure applies to hockey, the higher figure to football. According to the football players questioned, figures of about 60 per cent were perceived as ideal.
Besides force reduction, there are further requirements for bound elastic bearing layers and elastic layers which are listed below:
Elastic layers or elastic bearing layers are usually manufactured in-situ and applied on a bound or unbound bearing layer. Nowadays the layer thickness varies between 25 and 35mm. The thinner the layer, the more decisive the precise and consistent manufacturing of the layer is. Therefore the layer’s foundation has to be perfectly even as well. Work of this precision can only be achieved with laser-controlled machines.
The elastic layer consists of a mixture of rubber granulate and elastic binding agents mixed in-situ in a pugmill mixer. Mineral constituents are added to achieve greater stability.
The elastic layer can also be built by installing prefabricated turf lengths. If this is the case, it is important to select a layer thickness that ensures the required force reduction on the surface of the turf.