FIELD: construction.
SUBSTANCE: raw mixture for production of gypsum brick includes, pts. wt.: phosphogypsum astringent 39.5-44; water 25-30; quartz sand 5-10; fly ash 20-25; asbestos fibres 0.5-1 cut into lengths of 5-10 mm.
EFFECT: increase of strength of gypsum brick.
1 tbl
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