Input material defines quality
The processing of construction and demolition waste in state-of-the-art processing plants is one important component in the production of recycled aggregates. However, the type and quantity of different input materials have an even greater influence on the quality. A sophisticated system ensures constantly good conditions for production. This begins with the on-site removal and collection of rubble through controlled demolition. It continues with the transport of the material to recycling plants, sorting and screening at the entry scale, separate storage at the plant and the preparation and production of corresponding aggregates and sieve lines.
Separate storage of different types of CDM waste such as concrete, gravel, sand, natural stone or asphalt
Multi-control system for quality-controlled recycled construction materials
Control mechanisms at our facilities begin with the screening of the construction and demolition waste rubble at the point of entry. On delivery, the mineral material is subject to an initial test at the scale before it is accepted onto our site. This includes data collection (e.g. origin of the material, presence of corresponding chemical analyses), visual and odour control, or, in case of road rubble, a check for possible tar contamination.
This enables us to ensure the removal of contaminated demolition materials and a targeted pre-sorting according to the future high-end intended use. Separate storage of different types of building rubble prevents possible fluctuations in the material composition during the processing and production of individual construction aggregates.
Multi-control system for quality assurance of remexit®
As for primary building materials, the technical and structural suitability of remexit® is proven within the scope of quality monitoring. In contrast to natural raw materials, substitute building materials such as remexit® are subject to additional environmental testing. This results in the classification into the corresponding environmental material class, e.g. in NRW according to RCL I or II, or the LAGA classification.
The general proof of suitability certificate (Eignungsnachweis) as well as regular external monitoring tests (Fremdüberwachung) may only be carried out by officially recognised testing bodies. Such recognition is granted by the German road construction authority of the respective federal state or by a designated authority.