FIELD: building materials. SUBSTANCE: invention elates to composite of cement solution, in part, to composites of cement-base plastering and masonry solutions resistant to effect of biocorrosion caused by fungi and microorganisms. Cement solution containing Portland cement, sand, water and polyhexamethyleneguanidine salt-base biocide addition contains polyhexamethyleneguanidine hydrochloride "Polisept" in the amount 0.01-2% of cement mass. Invention can be used in industry of building materials. EFFECT: simplified composite, enhanced ecological safety of solution.
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