FIELD: manufacture of building materials. SUBSTANCE: cement composition comprises, wt. -%: alumina cement, 8.5-56.5; portland cement, 24-40; semiaqueous gypsum, 10-35; superplasticizer based on naphthalene sulfonic acid sodium salt with formaldehyde C-3 or based on sodium salt of product of condensation of waste resulting from phenol-formaldehyde production, 0.5-3.5; and water, the balance. Composition has mini-cone melt to 180 mm; short setting time and strength of not greater than 14.7 MPa. EFFECT: improved properties. 1 tbl
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Authors
Dates
1997-09-20—Published
1992-11-03—Filed