COMPOSITE BACKFILLING MATERIAL Russian patent published in 2015 - IPC C04B18/00 C04B28/04 

FIELD: mining.

SUBSTANCE: composite material for backfilling of the mined-out space comprises cement, the plasticising agent, fine-grained filler - waste of enrichment of wet magnetic separation of ferruginous quartzites, water, in addition it contains the basalt modified microfiber at the following ratio of components, wt %: cement - 14; named waste - 61.70; named microfiber - 0.422; superplasticising agent SP-1 - 0.15; water - the rest.

EFFECT: increase of strength of backfilling composite material.

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