Water Reducing Admixture

Water reducing admixture is also called a water reducing agent or water reducer. It is a concrete admixture that can reduce water consumption while the concrete slump is basically unchanged. As a concrete additive, water reducer for concrete plays a very important role in concrete applications. For example, the use of water-reducing admixtures can reduce the amount of water and increase the strength of concrete. Adding it can save cement consumption and reduce engineering costs.  According to water reduction and enhancement capacity, it is divided into the ordinary water reducing agent and high range water reducer.

Types of Water Reducing Admixtures in Concrete

As a leading concrete admixtures manufacturer and supplier in China, Kingsun always provides high quality products, competitive prices and good services for all the clients. There are four types of water reducing admixtures in concrete, they are sodium lignosulfonate (SLS), calcium Lignosulfonate (CLS), sodium naphthalene sulfonate (SNF) and polycarboxylate superplasticizer (PCE). The following are their specifications and details.

1. Sodium Lignosulphonate

Sodium lignosulphonate is a common concrete water reducer and its raw material is lignin. It can be used in a mortar to improve the workability, fluidity, and strength of concrete. The water reduction rate of sodium lignosulphonate is between 5% and 10%. Sodium lignosulphonate has three functions. They are namely dispersion, venting, and initial hydration inhibition. There are three uses of sodium lignosulphonate.

Firstly, it can reduce water consumption and increase the strength of cement.

Second, it can improve the workability and fluidity of the concrete while maintaining the same amount of water and strength.

Thirdly, it can reduce the amount of cement used and the amount of water used to maintain the same strength.

Sodium Lignosulphonate Powder
Kingsun Sodium Lignosulfonate

2. Calcium Lignosulfonate

Calcium lignosulfonate can be used in concrete engineering. So it is mainly used as a concrete water reducer. It has the functions of adsorbing and dispersing cement, and improving various physical properties of concrete. The following are its main features:

  • Without changing the water consumption of the concrete, the fluidity of the concrete can be increased, the workability can be improved, and the project quality can be improved.
  • The dosage is 0.20-0.30% of the cement dosage, and the usual dosage is 0.25%, which can reduce the water consumption by 8-12%.
  • While keeping the concrete slump and strength the same as the reference concrete, 8-10% of cement consumption can be saved.
  • It can improve the impermeability and freeze-thaw performance of concrete, and is non-corrosive to steel bars and aggregates.
Calcium Lignin Sulfonate Powder
Calcium Lignin Sulfonate Manufacturer in China

3. Sodium Naphthalene Sulfonate

Sodium naphthalene sulfonate (SNF) is the earliest high-efficiency concrete water reducing agent. It is a product of naphthalene sulfonation by sulfuric acid and condensation with formaldehyde and is an anionic surfactant. The appearance of naphthalene type concrete water reducers could be light yellow to dark brown powder depending on the product. It is easily soluble in water and has a good dispersion effect on many powder materials such as cement. The water reduction rate of SNF can reach 25 percent. Different water-reducing agents have different characteristics.

The main characteristics of sodium naphthalene sulfonate are as follows:

  • When the strength and slump are basically the same, the amount of cement can reduce by 10% to 25%.
  • When the water-cement ratio is constant, the initial slump of concrete can increase by more than ten centimeters, and the water reduction rate can reach 15% to 25 percent.
  • It has a significant early strength and enhancement effect, and its strength can increase by 20-60%.
  • It can improve the workability of concrete, adapt to various types of cement. Moreover, it is compatible with other types of concrete admixtures.
  • Particularly suitable for use in the following concrete works: fluid concrete, plasticized concrete, steamed concrete, impervious concrete, waterproof concrete, natural curing precast concrete, steel and prestressed reinforced concrete, high strength ultra high strength concrete.
SNF Powder
SNF Superplasticizer Warehouse

4. Polycarboxylate Superplasticizer

Polycarboxylate superplasticizer (PCE) is the most advanced high range water reducing admixture in the world because it has the highest technological content, the best application prospect, and the best comprehensive performance. Compared with the performance of similar products at home and abroad, the polycarboxylate high range water reducer admixture has reached the international advanced level in terms of technical performance index and cost performance. Polycarboxylate superplasticizer is a new type of superplasticizer with unique performance and no pollution. In general, it is an ideal admixture for high-performance concrete.

Compared with other water reducing agents in concrete, PCE superplasticizer has many advantages in performance and production, such as high water reduction rate with a low dosage, the loss is small when the slump is light, less impact on cement setting time, good adaptability to cement.

PCE Chemicals
Polycarboxylate Superplasticizer Manufacturer

Buy High Quality Water Reducing Admixture from Kingsun

  1. As the most professional manufacturer in China, Kingsun has more than 15 years’ experience in construction chemicals industry.
  2. Kingsun has its own factory and advanced production lines, so we can provide customers with sufficient supplies and competitive prices.
  3. All of our chemical products have passed strict quality inspections and certifications, such as ISO 9001, SGS, etc.
  4. At present, our products have been exported to more than 30 countries, they are Malaysia, Singapore, Pakistan, Bangladesh, Bahrain, Mexico, Chile, Israel, Qatar, Brazil, Turkey, Saudi Arabia, UAE, South Africa, Jordan, Peru, South Korea, Indonesia, Thailand, Philippines, Vietnam, Russia, India, etc. At the same time, we have established long-term friendly cooperative relations with many customers.

If you would like to buy concrete water reducing admixture from Kingsun, please contact us online or leave a message below for us. We also look forward to hearing from you.

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