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Polycarboxylate sodium naphthalene formaldehyde concrete admixture superplasticizer
Polycarboxylate sodium naphthalene formaldehyde concrete admixture superplasticizer is a new generation of high performance superplasticizer developed by Qingdao Hongsha polymer materials Co. Ltd..With this product, concrete has high slump retention,slumps keep unchanged within 30min andloss little in 1h; Meanwhile, it has advantages such as low dosage,high water reducing rate and low shrink rate. It improves the liquidity of concrete greatly with this product,makes the concrete keep long time construction performance,as well as ameliorates its peaceability and physics performance,improving construction quality.
The technical performance of Polycarboxylate sodium naphthalene formaldehyde concrete admixture superplasticizer as follows:
Technical Parameters | |||
Test items | Performance indicators | Test results | |
Formaldehyde content,% | ≤0.05 | 0.003 | |
Cement paste fluidity,% | ≥240 | 273 | |
Sodium content,% | ≤5.0 | 1.1 | |
Chloride ion content,% | ≤0.2 | 0.13 | |
Alkali content(Na2O+0.658 K2O),% | ≥5.0 | 1.8 | |
Gas content,% | Concrete used for the preparation of non-frost | ≥3.0 | 4.5 |
Concrete used for the preparation of antifreeze | ≥4.5 | ||
Slump retention, mm | 30min | ≥180 | 195 |
| 60min | ≥150 | 175 |
Water reduction ratio,% | ≥20 | 25 | |
Atmospheric bleeding rate ratio,% | ≤20 | 0 | |
Pressure bleeding rate ratio,% | ≤90 | 45 | |
Compressive strength ratio,% | 3d | ≥130 | 172 |
7d | ≥125 | 166 | |
28d | ≥120 | 153 | |
Steel corrosion effect | No rust | No rust | |
Shrinkage ratio,% | ≤135 | 97 | |
Relative durability index,% 200 | ≥80 | 85 | |
Notes:1.Calculation of above products are converted into solid content 20%, dosage 1% of the gelled material.
2.Index basis: Temporary technical condition of passenger dedicated line of high performance concrete.
High performance naphthalene superplasticizer concrete additive,
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