Zibo Jianhua Building Materials Co.,Ltd is one of the leading China SNF manufacturers and suppliers with professional factory, welcome to buy or wholesale SNF, sodium naphthalene formaldehyde from us.
JH- FDN Naphthalene Superplasticizer
The main ingredient of JH-FDN which has the advantage of high water reducing ratio, non-delayed coagulation, non-air entraining and strong adaptability, is β -naphthalene sulphonate formaldehyde condensate. It can improve the workability of concrete to a large extent so as to reduce the water consumption for blending. And, it can improve the strength of concrete. JH-FDN can produce series products of concrete admixture which can be suitable for all kinds of project requirement through compounding with other kinds of admixture.
JHJC has the experience of producing the naphthalene superplasticizer for more than ten years. Our “pearl“ brand naphthalene superplasticizer which is the famous brand in Shandong Province, is sold well in domestic and abroad market..
Main performance and characteristics
1. This product is non-toxic,non-inflammable with stable shape. It does not have corrosion effect on steel bar.
2. The concrete not only has air entraining effect but also has smooth and beautiful appearance.
3. The low alkalinity will not give rise to the alkali aggregate reaction.
4. The water reducing ratio is 15 to 30 percent. It can also improve the fluidity of blended material with the concrete slump at 18 to 25cm.
5. It can also have strong dispersion for cement and can effectively improve the workability of blended material to make sure the concrete mixture is easy to pouring and vibrating.
6. It can improve the strength of concrete for 60 to 100 percent within 1 to 7 days. The high concentration product can improve the strength of it for 20% to 40% in 28 days.The low concentration product can improve the strength of it for 10% to 40% in 28 days.
7. It can also save cement with the reduction of its amount at 7 to 25 percent and can maintain the same strength.
8. It can improve the density of concrete and reduce the shrink and creep , at the same time, improve the durability to improve its service life.
·Scope of Application
JH-FDN can be widely used in all kinds of concrete projects and cement product, for example:
1. Suitable for all kinds of hierarchical grades pumping concrete.
2. Suitable for compounding normal concrete, high-performance concrete, high-strength concrete.
3. Suitable for high-performance and high flowing concrete, fair-faced concrete.
4. Suitable for mass concrete that used in expressway, railway, bridge, tunnel, water conservancy projects, ports, wharf, underground etc.
1.It can be put into blender with mixing water, If it is added later or added before concrete pouring and is mixed for a moment,the plasticizing effect could be better.
2.High concentration product, the general recommended dosage powder is 0.4% to 1.0%. Generally the liquid is 1.0% to 2.5%. Low concentration product, the general recommended dosage powder is 0.5% to 1.2% . Generally the liquid is 1.2% to 3.0%.As the requirement of engineer,the dosage can be adjusted after testing.
3.The powder is packed and stored with 25kg per bag or 40kg per bag. The protection is made for preventing the damage or damp; The liquid is packed 250kg per bucket or in bulk. It can not bear long term exposure.
4.The indicators above belong to highly concentrated products. According to the different amount of Sodium Sulphate Contained in the products, there are low-concentration and middle-concentration items.
Parameters and Acceptance criteria
Parameters and Acceptance criteria(JH-FDN-C for reference)
Water Reducing Ratio, %
Water Penetration, %
Temporal Distribution For Setting, min
Initial Setting Time
Terminal Setting Time
Corrosion To Steel Bars
Note: standard Blend Dosage :0.75%(as cement amount)，Chinese standard cement
·Storage and Safety Matters
1．It dose not degenerate within its shelf life. The powdery product should be stored in dry and ventilated warehouse. Pay attention not to stave the bag and keep waterproofing during the storage and transportation.
2．If it is affected with damp and agglomeration, it can be dissolved into liquid state or crushed into powder before using and there is no influence to the performances.
3．JH-FDN should be stored at temperature from 0℃-40℃. Keep out of sun, rain, impurity. Avoid evaporation of water.
4．JH-FDN’s quality guarantee period: 360 days. Retest should be done when it is beyond validity, and can be used when it’s qualified.
5．Avoid touching with eyes and skin allergy people. If touching, should clear with water and timely go to see doctor.