Concrete Admixture Snf Superplasticizer Astm C494

Sodium Naphthalene Sulfonate Concrete Admixture SNF Superplasticizer astm c494

Naphthalene Sulphonate Superplasticizer SNF NSF PNS FDN Product Description:

FDN-A is a high range water reducer, high concentrate naphthalene-based superplasticizer, also named Naphthalene Sulfonate Formaldehyde Condensate (NSF), SNF, PNS, etc..
FDN-A is made of naphthalene, sulforic acid, formalin and alkali, through sulphuration, hydrolyzation, condensation and neutralization reaction. FDN-B contains no chloride. Thus, it meets the requirements of chemical admixture specifications for concrete: ASTM C 494, Type F; ASTM C 1017, GB8076-1997 and GB50119-2003.

Advantages:

1. High water-reducing rate: FDN-B can reduce water more than 25%. It has features of superplasticizer, effectively increases concrete fluidity and reduces water penetration and segregation. Therefore, improves concrete placement and makes concrete easy to use and compacting.
2. Strengthening: Given the same amount of cement and slump requirement, this product can increase the concrete stress by 50-110%, 40-90%, 40-70% and 20-40% on day 1, 3, 7, and 28 respectively.
3. High applicability: It can be used with different variety of cement. It is compatible with other admixtures. It may be used with expanding admixture, air entraining admixture as well as fly ash for supplementary and catalystic purpose.
4. Approporate setting time: It has less effect on the initial and final setting time. The difference in setting time generally is less than 1 hour.
5. Low sodium sulfonate content: The aqueous solution has no crystals in winter, which can avoid pipeline congestions when FDN-B applied.
6. Safety: No toxic, smell and radiation; no corrosion to steel bar; no flammable and explosive material.
7. Effective durability: It can modify the structure of concrete and increase the property of anti-seepage, anti-freezing, and carbonization.
8. Easy to use: It can be added directly or used after soluted in water. It can be used for different working condition and concrete mixer.

Package, Storage & Handling:

For powder: Woven fabric bag with plastic liner. Net weight: 25kg +/- 0.13 kg.
Cautions should be taken to prevent packages from being torn by sharp-ended objects while being transferred or delivered. When being contaminated by high humidity or moisture in case of leakage, it can be prepared in prescribed ways for further use without surrendering any effect.
It should be stored in a dedicated warehouse that is well-ventilated and dry. It remains effective in one year. After the expiration date, it can be used again if testing results fall within the established range.