FIELD: building materials, more particularly compositions of light-weight concrete mixes with modified additives. SUBSTANCE: light-weight concrete mix comprises, wt %: cement, 71.25-72.44; polystyrene foam, 2.96-3.43; ethylene diamine tetracetic acid disodium salt; methyldiethylaminoethyl methacrylphenol benzosulfate of polyglycol ether, 0.005- 0.02; and water, the balance. EFFECT: reduced delamination of light-weight concrete mix and greater strength of light-weight concrete. 2 tbl
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