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PCE concrete super plasticizer admixture used in construction engineering
The technical performance of PCE concrete super plasticizer admixture 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.
Sulphamate water reducing agent,
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