FIELD: manufacture of building materials. SUBSTANCE: raw meal contains 30-40% lime, 30-50% quartz sand, 15-20% keramzite sand, and, additionally, dusty ferrosilicium production waste (the balance). EFFECT: reduced autoclave treatment time and increased waterproofness of brick. 1 tbl
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Authors
Dates
2003-10-10—Published
2002-03-20—Filed