RAW MATERIAL COMPOSITION FOR PRODUCTION OF NON-FLAMMABLE POLYSTYRENE CONCRETE OF INCREASED STRENGTH Russian patent published in 2022 - IPC C04B38/08 C04B28/04 C04B111/20 

FIELD: building materials.

SUBSTANCE: invention relates to the production of building materials used for insulation of curtain outer wall fencing structures of energy-saving buildings. A raw material composition for the production of non-flammable polystyrene concrete of D250-D350 average density grades and B0.75-B1.5 strength grade contains, wt.%: Portland cement with activity of at least 50 MPa 75.3-80.3, granular foamed polystyrene – GFP with granules of an average density of no more than 15 kg/m³, obtained by foaming of self-extinguishing polystyrene with flame retardant additives, having a flammability group of no more than B2 1.6-1.7, micro-silica of MK-85 grade 7.6-12.5, a complex chemical additive 3.0-4.2, water is the rest. The complex chemical additive contains, wt.%: modified sodium lignosulfonate salt 1.0-10.0, a mixture of sodium salts of alkyl-sulfuric acid and mono-substituted acidic sulfoester of ethoxylated fatty alcohols of C10-C16 range 0.2-6.0, polycarboxylate ester 5.0-20.0, water is the rest. GFP has a relative volumetric concentration in polystyrene concrete of 0.28-0.41. The invention is developed in a dependent clause.

EFFECT: obtainment of non-flammable polystyrene concrete of D250-D350 average density grades of increased compressive strength.

2 cl, 1 tbl