Concrete Superplasticizer

High-efficiency concrete superplasticizer is a chemical admixture that can significantly improve the workability of commercial concrete and significantly reduce its mixing water volume. It is one of the important products in the pillar industry of new building materials. Concrete superplasticizers greatly improve the mechanical properties of high-strength commercial concrete, but also provide a simple and easy construction process.

However, high range superplasticizers for concrete are different from plasticizers because the former is a chemical product, not an industrial by-product, so it has the advantages of high purity, outstanding advantages, and fewer side effects. In addition, compared with ordinary water reducing agents, superplasticizers have stronger water-reducing and reinforcing effects. With the improvement of the quality of construction projects, the use of concrete water reducing agents is becoming more and more extensive.

Various Types of Superplasticizers For Concrete

The superplasticizer for concrete has the functions of high-efficiency water reduction, retardation, slump retention and reinforcement. This product has strong adaptability to cement, less dosage, and is easy to use. It is especially suitable for concrete projects that require high-efficiency water reduction and retardation. The water-reducing rate Between 18% and 25%. Therefore, Kingsun concrete superplasticizers for sale are suitable for prefabricated and cast-in-place reinforced concrete and prestressed reinforced concrete projects in various industrial and civil buildings, water conservancy, transportation, ports, municipal and other engineering constructions. They are also suitable for high-strength, ultra-high-strength, medium-strength concrete, early-strength, shallow frost-resistant, and large-flow concrete. In addition, they can be used as the water-reducing component of various compound additives.

Below we will introduce several common concrete superplasticizers on the market, for example, sodum naphthalene (SNF) superplasticizer, PCE polycarboxylate superplasticizer and sulphonated melamine formaldehyde (SMF) superplasticizer. These prodcuts all belong to the high range superplasticizers, but their function and prices are also different. Please check the detailed introduction of these superplasticizer series products:

Sodium naphthalene sulfonate is one of the most widely used water reducers at present, and its cost performance is relatively high. SNF powder is yellow-brown, its liquid is brown, soluble in water, stable in chemical properties, long-term storage does not deteriorate.

SNF superplasticizer can be applied to Portland cement, ordinary Portland cement, slag Portland cement, pozzolanic Portland cement, fly ash Portland cement, etc. It is also suitable for prestressed reinforced concrete, high-strength concrete, high-performance concrete , steamed concrete, large flow concrete, pumped concrete, etc. So SNF can be widely used in buildings, roads, bridges, tunnels, etc. In addition, it can also be used as a dispersant in leather, textile, dye and other industries.

  • SNF is harmless to humans or animals. Besides, it has wide adaptability and significant enhancement to cement.
  • The naphthalene superplasticizer dosage in concrete is 0.5%~1.5% of the cementitious material, while the water reduction rate is 15~25%.
  • It can save 15~20% of cement while maintaining the same workability and strength of concrete. Under the same mixing ratio, the initial slump of concrete can be increased by more than 10cm.
  • The water-reducing effect is obvious, which can enhance the workability of concrete at a low water-cement ratio and improve the fluidity of concrete.
  • This product is low in alkali and sodium sulfate, which effectively avoids the reaction of concrete alkali-aggregate, no precipitation or crystal at low temperature.

Advantages of Naphthalene Superplasticizer

  • SNF is harmless to humans or animals. Besides, it has wide adaptability and significant enhancement to cement.
  • The naphthalene superplasticizer dosage in concrete is 0.5%~1.5% of the cementitious material, while the water reduction rate is 15~25%.
  • It can save 15~20% of cement while maintaining the same workability and strength of concrete. Under the same mixing ratio, the initial slump of concrete can be increased by more than 10cm.
  • The water-reducing effect is obvious, which can enhance the workability of concrete at a low water-cement ratio and improve the fluidity of concrete.
  • This product is low in alkali and sodium sulfate, which effectively avoids the reaction of concrete alkali-aggregate, no precipitation or crystal at low temperature.
TypeSNF-ASNF-BSNF-C
Solid Content (%) ≥92%
PH Value7-9
Na2SO4 Content (%)≤51018
Chlorine Content (%)≤0.30.40.5
Net Starch Fluidity(mm)≥250240230
Water Reducing Rate(%)262523
Packing25kg pp bag; 650kg Jumbo bag. A customized package is available.

PCE superplasticizer belongs to high-performance water reducing admixture, which is a kind of cement dispersing agent in the application of cement concrete. It can be widely used in highways, bridges, dams, tunnels, high-rise buildings and other projects.

High-performance polycarboxylate superplasticizer has many characteristics such as preventing concrete slump loss without causing significant retardation, good plasticizing effect at low dosage, good fluidity retention, and high degree of freedom. In addition, it enables concrete to have excellent workability, good strength and durability. In a word, PCE water reducer has good comprehensive technical performance advantages and environmental protection characteristics, which meets the needs of modern concrete engineering. Therefore, it has gradually become the preferred admixture for the preparation of high-performance concrete.

Advantages of PCE Superplasticizers

    •  Good protection, no-slump or loss in 90min.
    • In the case of the same fluidity, the impact on cement setting time is small. As a result, it can solve the problems of water reduction, bleed air, retardation, and bleeding.
    • PCE superplasticizer can prepare super-water reducing agents with special properties by adjusting the molecular structure.
    • More slag or fly ash can be used instead of cement to reduce costs by adding polycarboxylate concrete admixture.
    • The polymerization route is diversified, and the synthesis process is relatively simple. Since no harmful substances such as formaldehyde and naphthalene are used, the environment will not be polluted.
ItemsStandard
PCE (High Water Reduction)PCE (High Slump Retention)PCE Powder
AppearanceLight Yellow LiquidClear Transparent LiquidWhite Powder
Solid Content, %50±1.050±1.098±1.0
Density (23℃) (kg/m3)1.13±0.021.05-1.10600±50
PH6.5-8.56.5-8.59.0±1.0
Chloride Content,% ≤0.10.10.1
Na2SO4 (by solid content), % ≤4.04.04.0
SolubilityCompletely Soluble
Water reducing ratio, % ≥25
PackingThe packing of PCE liquid is 230kg PE drum, 1100kg IBC tank or flexitank. But for PCE Powder, its packing is 25 kg PP woven bag.

Sulphonated Melamine Formaldehyde (SMF) is a product used as a concrete water reducer in cement and gypsum based solutions to reduce moisture content while increasing the flow and consistency of mixtures. When used in a good mix design, SMF results in lower porosity, better mechanical efficiency and higher concrete resistance to aggressive conditions.

Application of SMF Superplasticizer

  • Suitable for ready mix concrete, pumped concrete, flow concrete, high performance and better concrete, self-compacting concrete and high strength mortar.
  • Self-leveling floor products and grouts for foundry foundations.
  • Suitable for high-strength gypsum and gypsum materials.

The appropriate dosage of high-efficiency concrete superplasticizer is: air-entraining type such as methyl naphthalene series, condensed ring aromatic anthracene series, etc. The content of cement is 0.5% to 1.0%; non-air-entraining type such as melamine resin series, naphthalene series The amount of superplasticizer can be selected between 0.3% and 5%, and the most correct amount is 0.7% to 1.0%. When it is used in prefabricated components that need steam curing process, the amount should be appropriately reduced.

It is advisable to mix high-efficiency water reducer in the form of solution, but the water in the solution should be deducted from the total water consumption.

The most commonly recommended method is to add with mixing water (later after the initial part of mixing water).

Composite superplasticizers for concrete have different ingredients and there are many brands. Whether it is suitable or not must be tested and inspected first. High-efficiency concrete superplasticizers also have problems adapting to cement due to differences in cement types, fineness, and mineral components, so they should be used after testing.

Except for sulfamic acid and graft copolymers, high-efficiency water-reducing agents have a large slump loss in concrete, which can lose 30% to 50% in 30 minutes, so care must be taken during use.

The difference between ordinary water reducer and high efficiency water reducer is that the water reduction rate of ordinary water reducer is generally 5%~10%, while the water reduction rate of high efficiency superplasticizer can reach 15%~30%.

The amount of ordinary water reducer can not exceed the limit value (for example, the amount of lignosulfonate water reducer can not exceed 0.3%), while high-efficiency water reducer can be mixed with cement in a higher proportion, and has no disadvantages to concrete Influence.

Concrete superplasticizer for sale has a strong dispersing effect on cement, which can greatly improve the fluidity of cement mixture and concrete slump, and at the same time can greatly reduce water consumption, significantly improve the workability of concrete, and can greatly reduce water consumption , Significantly improve the strength of concrete at all ages.

High-efficiency water reducer basically does not change the setting time of concrete, and when it is added in a large amount (overdosage), it has a slight retarding effect, but it does not delay the growth of the early strength of hardened concrete. When the strength is kept at a constant value, the cement can be saved by 10% or more. At the same time, it does not contain chloride ions, and has no corrosion effect on steel bars, which will improve the impermeability, frost resistance and corrosion resistance of concrete, and enhance durability. However, if the dosage is too large, bleeding will occur.

Concrete tends to lose its workability quickly when superplasticizers are used. Therefore, high-strength concrete containing such materials must be transported, placed and finished before it loses its workability. Many superplasticizers maintain reasonable processability at around 100 minutes, but we still need to be cautious, especially in projects where a ready-mix concrete haul truck requires longer travel times. Usually, in order to avoid a sharp drop in slump and the resulting difficulty in pouring, only part of the superplasticizer is mixed in the batching process, and the rest is added on-site before pouring.

Kingsun - A Leading Concrete Superplasticizer Manufacturer

  1. As a leading manufacturer of construction chemicals in China, Henan Kingsun Chemical Co., Ltd. has been focusing on the research and production of various concrete admixtures with more than 15 years of experience.
  2. Kingsun company has its own factory and warehouse, the advanced production equipment, professional sales team.
  3. All of our products have passed quality certifications, such as ISO, SGS, BV,etc.
  4. Kingsun products have been exported to Brazil, Bahrain, Mexico, Korea, Thailand,Vietnam, Indonesia, Pakistan, South Africa, Australia, Chile, Russia, Ukraine, Singapore, Malaysia, India, etc. Besides, we also have established a long-term and stable trade relations with many new and old customers.
  5. We always try our best to provide the high quality products and good services for customers all over the world. By the way, if you want to know the price of concrete superplasticizer, please contact us online any time, we will be happy to help you.

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