FIELD: construction.
SUBSTANCE: invention relates to production of construction materials. Raw material for production of silica brick contains, by weight: lime 6.0–8.0, ground to a residue of not more than 10 % on No. 014 sieve, calcite-wollastonite ore 4.0–6.0, ground up to the rest no more than 10 % on No. 008 sieve, quartz sand 6.0–8.0, quartz sand – the rest.
EFFECT: increased frost resistance of silica brick.
1 cl, 1 tbl, 1 ex
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