1. Product Introduction
This product is made of retarding, plastic-preserving, foam-reducing, and water-reducing components. Under high temperature conditions in summer, it can delay the setting time of concrete, allowing fresh concrete to be Maintain its plasticity for a long time to facilitate pouring and molding. When applied to fluid concrete, it can increase the cohesion of concrete, reduce slump loss and segregated bleeding. In the continuous pouring of large volumes of concrete, it can reduce the heat of hydration, delay the peak of hydration heat release, and reduce temperature cracks. The production of admixture is an indispensable type of admixture in summer concrete construction.
2. Homogeneity indicators
Project indicatorsProject indicators
Appearance pinkish-yellow powdery paste fluidity 130㎜
Liquid brown liquid fineness 0.315㎜ Sieve residue﹤5%
Powder moisture content 5±1%, chloride ion content not detected
Liquid specific gravity 1.18 PH value 6-7
3. Main Comparison of technical performance indicators: C×1.0%
Test results of standard indicators of test items
First-class qualified products
Water reduction rate, %, not less than (≥) 8 5 12
Bleeding rate, %, not greater than (≤) 100 30
Air content, %, not greater than (≤) 5.5 3.0
Condensation time difference, min greater than, (﹥) Initial setting +90 +183
Compressive strength ratio, %, not less than (≥) 3d 100 100
7d 110 110
28d 110 105 115
Shrinkage ratio, %, not more than (≤) 28d 135 120
For the corrosion effect of steel bars, it should be explained whether there is any corrosion hazard to the steel bars. No corrosion
Conclusion: The measured items meet the first-class index of "retarding water reducing agent" in GB8076-1997
IV. Main technical properties
1. Recommended dosage: 1.0-1.5%
2. When mixed with 1.0%, retarding 1-8h
3. Reduction unit Water consumption is about 12%
4. The air content increases slightly
5. The slump loss is less than 2-3㎜ in 1 hour
5. Key points of application technology
1 , When used in combination with other additives, it must undergo a trial preparation test before use.
2. Measure accurately and do not add excessive amounts. The dosage can also be adjusted according to the actual situation.
3. Use under normal temperature conditions above 5℃.
4. It is suitable for commercial concrete, pumped concrete and large-volume concrete prepared with various Portland cements.
5. It is not suitable to be used for cement varieties with gypsum or fluorogypsum as setting regulator, and is not suitable for steam curing concrete.
6. Packaging and Storage
This product is packed in lined plastic bags, 25kg per bag. Liquid tank trucks are packed in bulk or according to user requirements. It should be placed in a dry and ventilated place to prevent moisture absorption and caking.
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