Description

Sodium Naphthalene Sulfonate Formaldehyde Condensate: Product Information FDN Superplasticizer ASTM C **4, Type F; ASTM C ***7 Sodium Naphthalene Sulfonate Formaldehyde(Na2SO4 â?¤5%) Description FDN is a high range water reducer, high concentrate naphthalene-based superplasticizer, also named Naphthalene Sulfonate Formaldehyde Condensate (NSF), SNF, PNS, FDN is made of naphthalene, sulforic acid, formalin and alkali, through sulphuration, hydrolyzation, condensation and neutralization reaction. FDN contains no chloride. Thus, it meets the requirements of chemical admixture specifications for concrete: ASTM C **4, Type F; ASTM C ***7, GB********7 and GB*********3. Uses FDN superplasticizer can be applied to make flowable, strong or steam-curing concrete. The minimum working temperature can be as low as 0 C degree. In steam curing, concrete with superplasticizer has to be strong enough before heating. The steam curing specification has to be pre-tested. It is particularly used as base material for compound admixtures. FDN possesses the features of no retarding, no air-introducing, superplastic high water-reducing and strength enhancing. It has low alkali content, low sulfonate, and high purity. It can be widely used in different concretes with less dosage and easy to use. Advantages â?? High water-reducing rate: FDN can reduce water more than *5%. 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. â?? Strengthening: Given the same amount of cement and slump requirement, this product can increase the concrete stress by *****0%, ****0%, ****0% and ****0% on day 1, 3, 7, and *8 respectively. â?? 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.