FDN Naphthalene Sulfonate Formaldehyde Condensate Concrete Admixture Manufacturer

FDN Naphthalene Sulfonate Formaldehyde Condensate Concrete Admixture

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FDN Naphthalene Sulfonate Formaldehyde Condensate Concrete Admixture

FDN Naphthalene Sulfonate Formaldehyde Condensate Concrete Admixture

FDN nalfonate formaldehyde condensate concrete admixture is the purified product of UNF-5 typeproduct, which is also β- naphthalene sulfonicacid formaldehyde condensation. It can be used in areas with daily minimumtemperature of 0℃ and for making high fluidity concrete, high strengthconcrete and steam curing concrete plus most cast-in-place concrete and precast concrete. Especially asparent material, our product can be used for composite of various types ofconcrete admixture.

Compared with UNF-5 type, FDN naphthalene sulfonate formaldehyde condensate concrete admixture has higher water reducing rate and fewer concrete slumploss, which can efficiently increase the concrete fluidity, reduce bleeding andsegregation and then improve the workability of concrete. Also, it features good adaptability to numerous types ofcement, appropriate setting time within one hour, no crystallization in winterwith low sodium sulphate,strong compatibility with other admixture such as expanding agent,air-entraining agent and fly ash. Due to the improvement of pore structure ofconcrete, its durability index including impermeability, carbonation resistanceand freeze-thaw resistance has been largely improved.

Specifications

Items	Specification
Appearance	Deep yellow or brown powder
Moisture (%)	≤ 8
Fineness (0.315mm remains) (%)	＜ 15
PH value of 10g/L aqueous solution	8–10
Chloride Content (%)	＜ 0.1
Sodium sulphate (%)	≤ 4.0
Total alkali content (%) （Na₂O plus 0.658K₂O）	≤ 4
Fluidity of cement paste (mm)	＞ 220

Dosage
Common dosage of our product ranges from 0.4% to 1.0% of the weight of cementitiousmaterials, while recommended dosage is 0.5% of the weight of cementitious materials.

How to use
1. If you want to use powder directly, youshould put with cement together and you may not directly add to the surface ofwet sand and stone.
2. If you want to make solution, you had better dissolve it fully and stir itwell.

Packaging
Our powder adopts a woven bag with plastic liner, with each bag weighing 25kg .