Concrete superplasticizer, also known as high range water reducer, is widely used in concrete engineering to improve the fluidity of concrete and reduce the water-cement ratio. By adding a small amount of high-efficiency water reducer, the water consumption can be greatly reduced while ensuring the strength of concrete, thereby improving the working performance of concrete and improving construction efficiency.
These superplasticizers can be applied to prefabricated and cast-in-place reinforced concrete in various industrial and civil buildings, water conservancy, transportation, ports, municipal and other projects. In addition, high-efficiency water reducers can also be used as water reducing agents and reinforcing agent components of various composite admixtures.
Types of Superplasticizers Used in Concrete
Naphthalene superplasticizer (SNF/PNS/FDN) is a type of high range superplasticizer for concrete, and the appearance is light brown powder. SNF is very soluble in water, and the water reduction rate is up to 25%. Naphthalene superplasticizers are often used to prepare high-fluidity, high-strength, high-performance concrete. It has the characteristics of high water reducing rate (15% to 25%), no air-entrainment, little influence on setting time, and relatively good adaptability to cement.
In addition, SNF superplasticizer can be used in combination with various other admixtures, and the price is relatively cheap. And this superplasticizer can be widely used in bridges, dams, highways, ports, tunnels, electric power, water conservancy, industrial and civil construction projects and natural conservation prefabricated components, etc.
Polycarboxylate ether superplasticizer (PCE) belongs to the third-generation high-performance water reducing agent. This kind of superplasticizer for concrete is developed after the general water reducing agent represented by sodium lignosulfonate and naphthalene superplasticizer. PCE superplasticizer is available in both powder and liquid forms, and their water reduction rate can be as high as 45%. It has features of low dosage, high water reduction, small shrinkage, which can greatly improve the strength of concrete.
PCE superplasticizer is widely used in prefabricated and cast-in-place concrete, reinforced concrete and prestressed concrete in the construction of high-speed railways, passenger dedicated lines, industrial and civil buildings, roads, bridges, port terminals, airports and other projects. It is especially suitable for projects that require a long time to prepare concrete and require high concrete slump, such as nuclear power projects.
Advantages of Superplasticizer For Sale
- Wide range of applications. High-efficiency concrete superplasticizers are suitable for prefabricated and cast-in-place reinforced concrete in various industrial and civil buildings, water conservancy, transportation, ports, municipal and other projects. Whether it is high-strength or ultra-high-strength concrete, or concrete that requires early strength, moderate frost resistance and high fluidity, its performance can be improved by using high-efficiency water reducers.
- The water reduction effect is very significant. Concrete superplasticizer can greatly reduce the water consumption of concrete, improve the fluidity of concrete, and keep the slump of concrete basically unchanged. The water reduction rate can usually reach more than 20%, and the water reduction rate of some high-performance water reducers such as polycarboxylic acid water reducers can even exceed 25%. This high-efficiency water reduction ability can significantly improve the workability of concrete and make it easier to construct.
- Improve concrete strength. Under the condition of the same amount of cementitious materials, the strength of concrete at all ages added with high-efficiency water reducers is significantly improved. For example, compared with the benchmark concrete of the same period, the 1d, 3d, 7d and 28d compressive strength of concrete added with high-efficiency water reducer can be increased by 50-110%, 40-90%, 40-70% and 20-40% respectively.
- Improved durability. Superplasticizer for conocrete can effectively improve the pore structure of concrete, reduce the permeability of concrete, and improve the durability performance indicators of concrete such as impermeability, carbonization resistance and freeze-thaw resistance. In addition, high-efficiency water reducer can also significantly reduce the shrinkage rate of concrete, reduce cracking and improve the crack resistance of concrete.
- High safety performance. High-efficiency water reducer has the characteristics of low alkali, low sodium sulfate and high purity. It has no corrosion effect on steel bars, is non-toxic, non-irritating and non-radioactive, and does not contain substances that are harmful to steel bars. At the same time, high-efficiency water reducer is non-flammable and non-explosive and is a non-hazardous product.
- Easy to use. The superplasticizer in concrete can be used directly or dissolved in water to form a solution-type admixture for use, which can meet the requirements of various construction environments or mixer types. At the same time, high-efficiency water reducer has good adaptability and can be matched with other admixtures and admixtures to complement and stimulate each other.
In short, high-efficiency concrete superplasticizer has been widely used in concrete engineering due to its excellent performance. It can not only significantly improve the workability and strength of concrete, but also improve the durability of concrete to meet the needs of various complex projects.
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