Mineral plate
Mineral panels are components made of mineral fibers that are mixed into a paste using water as an aid and then shaped as a mat into a panel and dried.
The mineral tiles produced using the wet-felted process are mainly used as inlay material in suspended ceiling structures. Usually the finished surface-treated and cut panels are placed in a grid of metal profiles, which is suspended from the raw ceiling. In the space between the panels and the raw ceiling, building technology installations are usually accommodated.
Such ceiling systems can meet high fire protection requirements. If necessary, they also fulfill the functions of sound insulation (mainly through sound absorption ) and heat insulation .
Typically, mineral slabs consist of:
- Mineral wool , d. H. Artificial mineral fibers made from non-directional glassy (silicate) fibers with a mass content of over 18% of oxides of sodium, potassium, calcium, magnesium and barium
- Fillers, e.g. B. Clay and Perlite
- Binder or binding agent, e.g. B. starch and cellulose .
Emulsion paints are often used for coating or the panels are laminated with aluminum foil, glass fleece, paper foil, plastic foil or veneers.
Avoid getting the panels wet if they contain water-soluble binders such as starch or cellulose.
Many types of mineral tiles should not be exposed to elevated temperatures of over 100 ° C for a prolonged period, as this can lead to yellowing of the surface color coating.
Relevant standards are, for example, DIN 18177, EN 13964 and EU Directive 67/69 / EC.
Major manufacturers include Armstrong World Industries Limited, Knauf AMF ceiling systems and OWA ceiling systems .
In the 1970s, some ceiling tiles (e.g. Wilhelmi type) were treated at the factory with an open-pored paint that contained high levels of PCB . Some of these are still evaporating today and contribute to the load on the room elevator with PCBs.
Dismantling and disposal
Depending on the age, different methods are to be used for dismantling. If the board was manufactured before June 2000, if no RAL quality mark can be found, it can be assumed that it is old mineral wool. This falls under TRGS 521 and must be treated as dangerous goods. The exact handling depends on the surface. A mineral tile with an undamaged and air-impermeable surface (e.g. plastic lining) can be expanded more easily than a mineral tile with an open surface. In any case, breaking the plate must be avoided; reassembly is also prohibited.
Depending on whether it is old or new mineral wool, different waste code numbers must be used. Old mineral wool must be disposed of under AVV number 17 06 03 *, new mineral wool under AVV number 17 06 04. If there is contamination with PCBs, the panels must be disposed of under AVV number 17 09 02 *.
swell
- PCR mineral tiles (wet-felted; PDF; 198 kB) Rules for environmental product declarations - Mineral tiles for suspended ceiling systems -
- WETEC - Wet felt technical committee
Individual evidence
- ↑ Pollutant Radgeber Buildings, Bavarian State Office for the Environment, Chapter 402: Building boards