CRUDE MIXTURE AND METHOD OF MAKING WALL AND BUILDING STONES Russian patent published in 2011 - IPC C04B28/08 B28B3/00 

FIELD: chemistry.

SUBSTANCE: invention relates to construction materials. The crude mixture for making wall and building stones through vibrocompression contains non-clinker slag-alkali binder and aggregate in form of sand, having the following composition in wt %: SiCb 34.1-39.9; Al₂O₃ 9.8-11.0; FeO+Fe₂O₃ 12.8-26.1; CaO 11.3-13.7; MgO 4.2-5.7; SO₃ 1.7-3.2; Na₂O+K₂O 1.3-3.2; percentage of other impurities 8.5-15; dry slaked boiler coal slag, additive - clay or saw dust, or microsilica or mixtures thereof with the following ratio of components, wt %: said binder 25-35, sand sand 5-15, said additive 3-15, said slag - the rest. Method of making wall and building stones from the said mixture involves tempering the said mixture with a solution which contains structured water and a polymer, placing into a mould, vibrocompression, removal from the mould and drying the stones.

EFFECT: high mechanical strength, homogenisation of the composition of concrete in the article, low density and thermal conductivity of building stones.

2 cl, 2 tbl, 1 ex