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polycarboxylate superplasticizer 50% concrete additive
Technical Parameters | |||
Test items | Performance indicators | Test results | |
Formaldehyde content,% | ≤0.05 | 0.003 | |
Cement paste fluidity,% | ≥240 | 273 | |
Chloride ion content,% | ≤0.2 | 0.13 | |
Alkali content(Na2O+0.658 K2O),% | ≥10.0 | 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
1.Low dosage 0.2~0.6% (by gelled material weight).
2.High water reduction up to 25~40%.
3.High efficiency superplasticizer.
4.High strength and durability.
5.Well cement adaptability.
6.Good slump retention ability.
7.Improve durability of the concrete.
8.Wide adaptability, can used in all kinds of concrete projects and cement products.
9.Meet the international standards environmental protection rules :ISO14000.
10.Low chloride,low alkali,no fomaldehyde content,harmless to the environment.
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