| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to industry of construction materials and can be used for obtaining concrete construction products. Granulated nanostructuring filling agent based on highly silica components for concrete mixture, consisting of silica-containing raw material in form of granules with size 0.5-10 mm, which have core, bound by means of water solution of alkali-containing binding agent, and protective envelop, where core consists of highly silica rock, crushed until it passes sieve with 0.315 mm cell or swollen perlite sand with particle size to 0.16 mm, as binding agent used is water solution of hydroxide of alkali metal and sodium silicate, taken with ratio 0.6-0.99:0.01-0.4 by weight, in amount 5-30% of mixture, and protective envelop on core surface is formed by its granulation with dry Portland cement with further hardening to strength not lower than 0.12 MPa. Concrete mixture for manufacturing construction product in accordance to one version contains, wt %: Portland cement 15-25, sand 50-60, water 10-13, claimed filling agent 2-20; in accordance with the other version it contains, wt %: Portland cement 20-35, water 10-15, claimed filling agent 50-70. Concrete construction product, manufactured from said mixture by one or the other version.EFFECT: reduction of density of filling agent and product, reduction of heat conductivity with preservation of strength.4 cl, 2 tbl, 1 ex |
