FIELD: construction materials.
SUBSTANCE: invention relates to the construction materials industry, in particular to the production of fine-grained concrete. Crude mixture for manufacturing fine-grained concrete contains, by weight: portland cement – 23.0–27.0; quartz sand – 60.0–64.0; superplasticizer C-3 – 0.6–0.8; technical lignosulfonate – 0.15–0.25; biocide – 0.0001–0.0002; synthetic vanillin – 0.001–0.002; water, heated to a temperature of 48–52 °C, is the rest.
EFFECT: technical result is high frost resistance.
1 cl, 1 tbl
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|
RU2644783C1 |
| CONCRETE MIXTURE | 2012 |
|
RU2491256C1 |
