FIELD: building industry and materials.
SUBSTANCE: invention relates to composition of complex additive for a building mixture. Invention proposes a complex additive for building mixture comprising a superplasticizing agent C-3 and sodium formate and, additionally, sodium sulfate taken in the following ratio of components, mas. p. p. (as measure for dry matter): superplasticizing agent C-3, 1; sodium formate, 1-3.5, and sodium sulfate, 0.02-0.05. Invention provides preparing anti-frosting additive working effectively as a component of building mixtures used at temperature lower -15°C. Proposed additive can be used in industry of building materials in manufacturing concrete and ferroconcrete articles and constructions, and in petroleum production industry for carrying out plugging works in placement of concrete of a hole.
EFFECT: improved and valuable technical properties of additive.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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