Early strength high-efficiency water-reducing agent is the third generation of high-performance water-reducing agent developed after ordinary water-reducing agents represented by lignocalcium and high-efficiency water-reducing agents represented by naphthalene series. It is currently the most cutting-edge in the world. , a high-efficiency water-reducing agent with the highest scientific and technological content, the best application prospects, and the best comprehensive performance.
The products mainly comply with the GB8076-1997 “Concrete Admixtures” standard and the Ministry of Railways Science and Technology Base [2005] No. 101 “Interim Technical Conditions for High Performance Concrete for Passenger Dedicated Lines” and Science and Technology Technology [2006] No. 104 “Passenger Dedicated Lines” “Detailed Inspection Rules for Admixture Products for High-Performance Concrete” and JG/T223-2007 “Early Strength High-Performance Water-Reducing Admixture” standard. All performance indicators meet the requirements of the above standards.
1. The water reduction rate is high when the dosage is low. When the dosage is about 1.0%, the water reduction rate exceeds 35%.
2. High early strength, the early strength is increased by more than 50%, and the 28-day strength is increased by more than 30%. It is especially suitable for high-content fly ash concrete. In the low dosage range of this kind of water-reducing agent, the strength increases significantly with the dosage, but after exceeding the optimal dosage, the strength will not further increase with the dosage.
3. Low slump loss, the 1h slump retention rate is very good, it remains unchanged at low positive temperatures, and the expansion increases. When the temperature exceeds 20 degrees, the 1h slump loss is slight. , but it also remains above 95%. When the temperature exceeds 30 degrees, the 1h slump retention value is still 93%.
4. Concrete has good workability: Concrete prepared with early-strength high-efficiency water-reducing admixture will not have obvious segregation or bleeding even under high slump conditions, and the appearance of the concrete will be consistent 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.
5. The concrete mixed with this product has very good durability in terms of filling, stability, pumpability, strength and compactness, resistance to sulfate corrosion, and resistance to alkali-aggregate reactivity. , frost resistance, shrinkage resistance and creep resistance are better than ordinary water reducing agents.
6. It has good compatibility with different types of cement and admixtures, solving the problem of compatibility between other types of water reducing agents and cementitious materials.
7. Good product stability: no precipitation at low temperatures.
8. Green and environmentally friendly products. The alkali content, chloride ion content, sodium sulfate content and formaldehyde content of this product are very low, and it does not cause pollution to the natural environment during the production process. It complies with ISO14000 environmental protection management. National standards are conducive to sustainable development.
9. Good economic benefits: the comprehensive project cost is lower than using other types of products. </p
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