In order to ensure the quality of concrete projects, the water-reducing agents used in the projects have corresponding quality standards. The quality of concrete water-reducing agents must not only comply with relevant national standards but also comply with relevant industry standards. High-efficiency water-reducing agent is the third generation of high-performance water-reducing agent developed in recent years. It is currently the most cutting-edge, high-tech, most technologically advanced, best-in-class application prospect and best overall performance in the world. It is a high-performance water-reducing agent. What is so special about water reducing agent? The editor will introduce it to you.
High-performance water-reducing agent is a new generation of environmentally friendly high-efficiency water-reducing agent. The liquid is light yellow or brown-red transparent liquid.
The main component of high-performance water reducing agent is a series of polymer products with a molecular weight of 5000-50000. Performance comparison with similar products at home and abroad shows that the high-performance water-reducing agent has reached the current international advanced level in terms of technical performance indicators and cost-effectiveness. It is a series of water-reducing agents with excellent properties that integrate water reduction, slump protection, reinforcement, anti-shrinkage and environmental protection. It can completely solve the weaknesses of high-strength and high-performance concrete with high viscosity and poor construction performance. It is used to prepare high-strength concrete. , ideal admixture for high-performance concrete. It can be compounded with various admixtures to form multifunctional admixtures, such as pumping agents, early strength agents, impermeable waterproofing agents, retarders, etc.
Regarding the compounding of high-performance water-reducing admixtures
Since the advent of high-performance water-reducing admixtures, in order to further improve its performance and reduce a certain cost, different water-reducing admixtures are often used. Admixtures are simply used in combination. This combination can often achieve the effect of 1+1>2, which is usually called the super stack effect. Currently, water-reducing admixtures other than water-reducing admixtures are rarely used alone. In the past 20 to 30 years, my country’s admixture compounding technology should be said to be internationally leading. In the subconscious mind of many manufacturers and users, any concrete performance requirements can be solved using compounding technology. This actually creates a dependence on admixtures. Whether it is a problem that should be solved by admixtures or poor concrete performance due to changes or even deterioration of raw materials, you can raise it with the admixture supplier and let them solve it.
Main performance of high-performance water-reducing agent products:
1. Low dosage, high water reduction rate. When the dosage is about 1.0%, the water reduction rate exceeds 35%.
2. Early strength and high 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 high-efficiency water-reducing admixture will not have obvious segregation or bleeding even under high slump conditions, and the appearance and color of the concrete will be consistent. </p
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