FIELD: manufacture of building materials. SUBSTANCE: blend contains (in wt %): quartz sand, 30-60; diabase dust, 10-30; alumina, 15-25; aluminium powder, 2-5; and silicon powder, 8-15. Characteristics: refractoriness 1710-1745 C, porosity 9.7-28.4%, heat resistance (1300 C - water) 11-14 changes, compression strength 24 H/sq.mm, resistance of bond to brickwork 8.2 MPa. Blend is suitable for repairing damaged linen. EFFECT: improved performance characteristics. 1 tbl
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