WAY OF WOOD CONCRETE MANUFACTURING Russian patent published in 2008 - IPC C04B40/00 C04B28/26 C04B18/26 

FIELD: building.

SUBSTANCE: invention concerns the industry of building materials and can be used at manufacturing of products and designs from wood concrete. The method of manufacturing of a wood concrete includes preliminary humidifying of a woody filler with its subsequent treatment by liquid glass made of silica fume with the silicate module n=4 and air curing, the subsequent dosing and mixing of all components, and also formation and curing of products from the raw mix consisting of the processed woody filler, ash-alkali cementing, presented by fly ash and liquid glass made of silica fume in an autoclave. The woody filler - a pine bark in bulk density 180-190 kg/m³: particle size 5 mm - 30 %, 2.5 mm - 60 %, 1.25 mm - 1.3 %, 0.63 mm - 4.8 %, 0.315 mm - 2.4 %, 0.14 mm - 1.2 %, less than 0.14 mm-0.3 %, humidified to 15 % moisture contents. The bark is processed with liquid glass with the silicate module n=4, density p=1.38 g/cm³, made of large-tonnage by product of the Bratsk ferroalloy plant - silica fume, containing to 13-14 % of fine-grained extraneous matters in form of β-SiC and graphite - C. The Bark is cured on air within 35 minutes. The specified ash - is ground within 20 minutes in a pebble mill, a fly ash II from burning of brown Kansko-Achinsk coal on thermal power station-7 of Bratsk of Irkutsk area. The liquid glass as a part of cementing - liquid glass made of silica fume with the silicate module n=1, density p=1.27-1.30 g/cm³, at a following parity of components, masses, part: bark 1.0, liquid glass (n=4) 0.20, fly ash 2.0-2.2, liquid glass (n=1) 2.0-2.1. Duration of curing in the autoclave makes 8 hours at T=95°C.

EFFECT: increase in durability of the material and decrease in expense of the water glass.

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