Early-strength high-performance water-reducing admixture (liquid) was developed after ordinary water-reducing agents represented by lignocalcium and high-efficiency water-reducing agents represented by naphthalene series. The third-generation high-performance water-reducing agent is currently the world's most cutting-edge, high-tech water-reducing agent with the best application prospects and the best overall performance. The early-strength high-performance water-reducing agent represents the most advanced water-reducing agent product in the world today. Performance comparison with similar products at home and abroad shows that the PC early-strength series high-performance water-reducing agent has reached the current international advanced level in terms of technical performance indicators and cost-effectiveness.
Editing performance characteristics
1. Low dosage and high water reduction rate: water reduction The rate can be as high as 45% and can be used to prepare high-strength and high-performance concrete.
2. The loss is small when the slump is light: the slump loss of ready-mixed concrete is less than 15% in 2 hours. For long-distance transportation and pumping construction of commercial concrete Extremely beneficial.
3. Concrete has good workability: Concrete prepared with early-strength high-performance water-reducing agent will not have obvious slump even under high slump conditions. Segregation and bleeding phenomena are eliminated, and the appearance of the concrete is uniform in color. It is extremely beneficial for preparing high-fluidity concrete, self-leveling concrete, self-compacting concrete, and fair-faced concrete. When used to prepare high-grade concrete, the concrete has good workability and cohesion, and the concrete is easy to mix.
4. Small shrinkage of concrete: It can significantly reduce the shrinkage of concrete and significantly improve the volume stability and durability of concrete.
5. Very low alkali content: alkali content ≤0.2%.
6. Good product stability: no precipitation at low temperatures.
7. The product is green and environmentally friendly: The product is non-toxic and harmless, and is a green and environmentally friendly product, which is conducive to sustainable development.
8. Good economic benefits: The comprehensive project cost is lower than using other types of products.
Early-strength superplasticizer is more convenient, safe and efficient to use, but it also has certain limitations. Its advantages are only relative. Therefore, during construction The following problems may be encountered during production.
1. It is difficult to unload from the mixer truck
Reason: It may be that the cement and Caused by severe inadaptability of early strength.
Processing method: A compound test should be done for each batch of cement using the construction mix ratio before opening.
2. The slump of the concrete mixture suddenly increases and the water bleeds
Cause: This batch of cement has good adaptability to the water-reducing agent.
Treatment method: The amount of admixture should be appropriately adjusted.
3. There are bubbles on the surface after hardening
Reason: In order to facilitate construction during use, reduce The dosage of aqueous agent is increased.
Measures: Strictly carry out construction according to the mix ratio, improve construction technology, and strengthen construction management.
4. Concrete sets and hardens slowly
Cause: the amount of water-reducing agent is increased Or the curing temperature is not enough.
Treatment method: Construction should be carried out strictly according to the mix ratio and the maintenance time should be extended.
5. The slump of concrete is significantly different from the design value
Reasons: two When admixtures are used together, incompatibility may occur.
Treatment method: Do a compatibility test before use and adjust the blending ratio. </p
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