FILLING MIXTURE COMPOUND Russian patent published in 2011 - IPC E21F15/00 

FIELD: mining.

SUBSTANCE: filling mixture compound including ground granulated blast-furnace slag, binding agent, inert filler and water contains the specified acid slag as binding agent with the following particle size distribution: less than 1 mcm - 4.3%, less than 3 mcm - 12.6%, less than 5 mcm - 17.2% and dolomite powder containing not less than 10% of particles with size of less than 1 mcm; wastes of wet magnetic separation of ferruginous quartzites as inert filler containing not less than 3.4% of particles with size of less than 1 mcm. In addition, composition includes surface active additive - superplasticising agent SP-1 at the following component ratio, wt %: the above slag 12, the above dolomite 10, the above wastes 60, water is the rest, and superplasticising agent SP-1 0.5% of slag.

EFFECT: larger volumes of utilised industrial wastes for sufficient improvement of environmental safety at maintaining the strength during 28 days.

1 ex, 2 tbl