FIELD: construction.
SUBSTANCE: brick glaze contains the following components, wt %: clay 4-6; yellow lead 16-20; manganese peroxide 2-4; quartz sand 60-63; dry galvanic sludge 12-16. Temperature of glaze baking is 1050-1100°C. Frost resistance of the produced glaze makes 45-50 cycles.
EFFECT: increase of glaze frost resistance.
1 tbl
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