FDN Superplasticizer ASTM C 494, Type F; ASTM C 1017 Sodium
Naphthalene Sulfonate Formaldehyde Na2SO4 < 5%)
FDN is a high range water reducer, high concentrate
naphthalene-based superplasticizer, also named Naphthalene
Sulfonate Formaldehyde Condensate (NSF), SNF, PNS, etc..
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 Designation C 494 as a Type F admixture, GB8076-1997 and
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.
1. High water-reducing rate: FDN 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
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. Appropriate 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
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,
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.