| 摘要 |
FIELD: building material industry, in particular brick production. ^ SUBSTANCE: claimed raw mixture contains (mass %): lime 5-8; calcite-vollastonite ore 15-20; perlite sand 12-16; alumina cement 6-8; liquid glass 2-4; and balance: quartz sand. ^ EFFECT: articles with increased strength. ^ 1 tbl |
