METHOD OF CONCRETE MIX PREPARATION Russian patent published in 2005 - IPC

FIELD: building materials, particularly used for producing concrete structures and articles.

SUBSTANCE: method involves metering quartz sand and binging material components; mixing above materials and forming articles. Binding material is ash-and-alkaline binder including fly-ash taken from the first zone and obtained from combustion of brown coal at heat generating plant and carbon-containing liquid glass. Liquid glass is produced from large-tonnage crystalline silicon production waste obtained at aluminum smelter, namely of microsilica, and including highly-dispersed carbon mixtures, namely graphite and carborundum with silica modulus n=1 and 1.40-1.53 g/cm³ density, in amount of up to 6-7% by weight. Concrete mix components are taken in the following amounts (% by weight): liquid glass obtainer from microsilica - 15.2-31.4, fly-ash - 23.8-48.5, quartz sand - 29.2-52.3. The mix may be hardened under temperature of up to -18°C.

EFFECT: extended range of concrete mix hardening temperatures.

1 ex, 2 tbl