FIELD: manufacture of building materials. SUBSTANCE: mix contains 75-80% clay (13.8% free silicon oxide) and 20-25% activated sludge-containing untreated sediment from waste waters produced on aeration stations, which is characterized by specific filtration resistance 8,3•1010-14,3•1010 cm/g and moisture 40.5-62.5% and contains more than 12% CaO, 15.45-15.5% free SiO2, and 59.8-67.9% organic impurities. EFFECT: increased strength, reduced density with increased swelling factor, reduced heat conductivity and firing temperature, reduced production cost. 1 tbl, 3 ex
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Authors
Dates
2002-08-27—Published
2001-03-20—Filed