FIELD: manufacture of building materials. SUBSTANCE: water-based sand blend for nonshrinking foamed concretes contains, wt %: Portland cement 42.3-43.8, foaming agent "Unipor" 0.2-0.4, stabilizing and air-entraining additive 0.3-0.6, and, additionally, quartz sand 26.5-27.4, said additive being composed of, wt %: industrial-grade lignosulfonate 39.1-41.2, caprolactam production alkali set- down 39,4-40.9, and potash 19.3-21.4. EFFECT: increased mobility and reduced dehydration and segregation. 2 tbl
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