FIELD: manufacture of building materials. SUBSTANCE: raw meal is composed of 29.5-32.6% limestone-sand binder, 32.7-33.3% quartz sand, and 21.5- 44.9% fired silica marl cl.5.0 to 0.0 mm. EFFECT: increased strength of crude product, reduced average density, and reduced heat conductance of autoclaved brick. 3 tbl, 16 ex
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