FIELD: building materials. SUBSTANCE: binder has, wt.-%: quicklime 10-30; phosphogypsum 4.5-5.5; waste of production of fatty acids on the basis of sodium sulfate 1-2, and burnt rock - the rest. Binder properties: compression strength after steaming for paste is 14.8-26.9 MPa, for solution is 9.8-16.2 MPa, after 28 days after steaming is 16.5-30.5 MPa, softening coefficient is 0.83-0.93, bending strength after steaming for solution is 1.6-2.73 MPa. EFFECT: enhanced quality of binder. 3 tbl
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