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Chemate - Sodium Naphthalene sulfonate
Sodium Naphthalene Sulfonateis a kind of naphthalene based superplasticier and is widely used in concrete. It is also known as many other names, such as, naphthalene sulfonate, naphthalene sulfonate formaldehyde, sulphonated naphthalene formaldehyde, poly naphthalene sulfonate, sodium polynaphthalene sulfonate, naphthalene sulfonic acid. Or more simply, SNF/PNS/FND/NSF. Naphthalene sulfonate, a derivative of sulfonic acid containing naphthalene functional unit, is a naphthalene series super plasticizer with strong dispersing effect on cement particles. SNF superplasticizer has a good effect on the preparation of large-fluid concrete, and has obvious effects on cast-in-place concrete and prefabricated components with early strength and high strength requirements. It can comprehensively improve various properties of concrete.
- When the concrete strength and slump are basically the same, the amount of cement can be reduced by 10%-25% by adding naphthalene sulfonate.
- The use of sodium polynaphthalene sulfonate can increase the early strength of concrete by 50% or 75%. According to its chemical reaction, the initial setting time can be advanced by one hour or delayed by one hour.
- When the water-cement ratio remains unchanged, the initial slump of the concrete can be increased by more than 10cm, and the water reduction rate can reach 15%-25%.
- Poly Naphthalene Sulfonate (PNS)has a significant enhancement effect on concrete, and its strength can be increased by 20%-60%.
- Sodium naphthalene sulfonate can improve the workability of concrete and comprehensively improve the physical and mechanical properties of concrete.
- Naphthalene formaldehyde sulfonate water reducing admixture has good adaptability to various cements and good compatibility with other types of concrete admixtures.
- The use of Naphthalene based superplasticizer won’t significantly affect the surface tension of water, nor will it entrain a large amount of air.
- It has good adaptability and is suitable for various cements. SNF superplasticizer is particularly suitable for use in the following concrete projects: liquid concrete, plasticized concrete, steam-cured concrete, impermeable concrete, waterproof concrete, natural-cured precast concrete, reinforced and prestressed reinforced concrete, high-strength concrete.
- Sulphonated naphthalene formaldehyde water reducer has no corrosive effect on steel bars, non-toxic and non-pollution.
- Its high-purity characteristics make cement particles have high and low foaming properties, high-range water reduction and strengthening effects.
- SNF powder has good adaptability to steam curing, which can shorten the curing time, lower the curing temperature, save energy, improve the output and quality.
- After the concrete is mixed with FDN, its freeze-thaw properties are significantly enhanced, the impermeability and durability of the concrete are improved, the shrinkage of the concrete is reduced, and there is no adverse effect on the carbonization of concrete.
- In addition, it also improves the fluidity and workability of cement.
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