ULTRA-LIGHT MINERAL FOAM MATERIAL Russian patent published in 2020 - IPC C04B38/10 C04B40/02 C04B22/08 C04B111/20 

FIELD: manufacturing technology; construction.

SUBSTANCE: group of inventions relates to an ultra-light mineral foam based on portland cement, in particular, to a method of producing mineral foam material and use of an aluminum salt source for improving mechanical stability and/or reducing destruction of a foamed cement suspension. Method of producing mineral foam material involves the following steps: (i) separate preparation of cement slurry and aqueous foam, wherein cementitious solution includes water (W) and portland cement (C); (ii) contacting the cement slurry with the aqueous foam to obtain a foam cement slurry; (iii) adding an aluminum salt during step (ii); (iv) cast foamed cement suspension and holding it for setting, wherein mineral foam material does not substantially contain particles with diameter D50<2 mcm. Group of inventions is developed in dependent claims.

EFFECT: technical result is obtaining ultra-light mineral foam, which is not destructed in vertical casting, having low density and heat conductivity.

13 cl, 4 tbl, 1 ex, 1 dwg