FIELD: building.
SUBSTANCE: invention concerns structure complex plasticising additives for concrete and water mortars and application can find by manufacture concrete and concrete products and designs. The technical result lies in increase of a conservability concrete and mortar mixes with the complex additive. The additive for concrete and the water mortars, including a superplasticiser of naphtaleneformaldehyde type and sodium-carboxymethylcellulose, contains in quality of a superplasticiser of naphtaleneformaldehyde type C-3 or Polyplast SP-1 at a following parity of components, wt %: the specified superplasticiser 95-99,5, sodium-carboxymethylcellulose 0.5-5.
EFFECT: increase of conservability of concrete and mortar mixes with complex additive.
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