Prefabricating gypsum board of high fire resistance is used in construction, in particular if a high fire resistance of gypsum boards is required, involves coating gypsum core on both sides with a cellulose coating

Abstract

Prefabricated gypsum plate of high resistance to fire, the plate being constituted by a gypsum core coated on both sides with a cellulose coating, characterized in that the gypsum core includes, as aggregates, steel waste from the steel industry . (Machine-translation by Google Translate, not legally binding).