FIELD: chemistry.
SUBSTANCE: invention relates to the industry of construction materials and can be used to produce heat insulation and structural-heat insulating autoclaved concrete for various purposes. In the method of producing a crude mixture for nanostructured autoclave foamed concrete, involving production of lime-silica binding material, subsequent mixing of the obtained lime-silica binding material, gypsum, a finely ground silica-containing component and a suspension of aluminium paste or powder in a mixer, the lime-silica binding material is obtained through combined dry milling of unslaked lime and quartz sand to specific surface area of 9000 cm2/g, and the finely ground silica-containing component is prepared by wet milling quartz sand to obtain a highly concentrated suspension with moisture content of 12-20% and content of particles smaller than 5 mcm of 30-50%, and subsequent dilution of the obtained suspension with water to density 1.75-1.80 kg/l, with the following ratio of components, wt %: said suspension (on dry substance) 62.5-72.5, said lime-silica binding material, with the following ratio of components, wt %: unslaked lime 75-85 and quartz sand 15-25, 25-35, gypsum 1.5-2.5, aluminium paste or powder 0.05-0.1, water to density 1.75-1.80 kg/l. The crude mixture for nanostructured autoclave foamed concrete is obtained using the method described above.
EFFECT: production of highly efficient heat insulating and heat-insulation construction autoclave foamed concrete with improved physical-mechanical and thermophysical properties.
2 cl, 2 dwg, 1 ex, 7 tbl
