| abstract |
Precursors for the production of porous, lightweight mineral building materials, containing at least one kind of cement, at least one surfactant, at least one variety of synthetic, natural and modified natural polysaccharides and Water hardness> 3.2 mmol / l (° fH) Process for the preparation of precursors, in which at least at least one kind of cement, at least one surfactant, at least one variety of synthetic, natural and modified natural polysaccharides and Water of a hardness> 3.2 mmol / l (° fH) s mixed together in a mixing unit, so that form in the resulting mixtures, air and / or gas bubbles of a diameter from 1 nm to 10 mm, and Process for the preparation of lightweight porous mineral building materials, in which the precursors are poured into a mold and / or applied to a surface and allowed to dry in the air for 3 to 48 hours at 10 ° C to 130 ° C, and the use of the porous , lightweight mineral building materials, in particular aerated concrete. |