Sodium Naphthalene Sulfonate Formaldehyde(SNF)
This product is widely used in buildings, roads, airports, seaports, and premix concrete projects. The general dosage is 0.5-1.2%, and the suitable dosage is 0.75%. The user can select the best dosage according to the adaptability of the admixture and cement through the concrete experiment.
Product Description
Product Performance characteristics
High water reduce ratio, can be reach 15-30%, can improve strength for differentdays.
Reduce cement 10-20% compare without use this product.
Has good adaption to silica cement, normal silica cement, slag cement, fly ashcement.
This product can significantly improve the freeze thaw resistance of concrete, resistance to permeability, sulfate attack and oveal improving the other physical properties.
Has low alkali content, the increase of Na2O is lower than 1kg for 1m3 concrete(cemetalize material around 400kg)
Mix with Amino-sulfate superplasticizer and aliphatic hydroxyl superplasticizer would have a good function water reduce and plasticity.
Main ingredient and technical index
Main components: b-naphthalene sulfonic acid formaldehyde condensation product of sodium
Homogeneity index
| Item/Index/Type | FDN-A | FDN-B | FDN-C | REMARK |
| Type | Standard | Standard | Standard | |
| Appearance | Powder | Powder | Powder | |
| Color | claybank | claybank | claybank | |
| Water reduce rate | >18 | >16 | >16 | |
| Fineness % | ≤0.5 | ≤0.5 | ≤0.5 | |
| PHof 10g/L solution | 7-9 | 8-10 | 7-9 | |
| Chloride ion content % | ≤0.3 | ≤0.5 | ≤4 | |
| sodium sulfate content % | ≤5 | ≤18 | ≤25 | |
| Solid Content | ≥92 | ≥92 | ≥92 | |
| insoluble substance | ≤0.5 | ≤0.5 | ≤0.5 | |
| Fluidity of cement 0.5-1.2% | ≥200 | ≥200 | ≥200 |
Scope of application
This product is widely used in building, road, airport, seaport and premix concrete project
Recommended dosage
The general dosage is 0.5-1.2%, and the suitable dosage is 0.75%. The user can select the best dosage according to the adaptability of the admixture and cement through the concrete experiment.
Packing
Powder package by plastic bag lined or woven inside, paper bag net weight 25/40kg, liquid used plastic barrel, metal barrel, net weight 200kg, 1000kg. Also can be used transport tankers in bulk transport tanker. Transport should prevent moisture, the dram should prevent leakage or evaportation drying.
Storage conditions and period of validity
Powder should be stored in a dry, ventilated warehouse. When it turn to block in storage, should make it to liquid if passed validity, should test before use. The validity is 2 years.
Use Instructions
When the admixture is a powder, the cement, sand, stone and admixture are added together to the mixer, and after being stirred uniformly, the mixing water is added and stirred for 2-3 minutes.
Conditional lag is better for mixing water.
When the admixture is a liquid, the cement, sand, and stone are added together to the mixer, and after stirring uniformly, the mixing water is added, and the mixture is stirred for 2-3 minutes.
Conditional lag is better for mixing water.
Matters needing attention
When the user first uses the product, or when the material such as cement changes, it is necessary to pass the concrete experiment to determine the optimum dosage.
When mixing liquid products, the amount of water in the water reducing agent should be deducted from the concrete mix ratio.
Safety tips
This product is a weakly alkaline solid, non-toxic, non-corrosive, but not edible. When it comes into contact with the human body, it should be clear with clear water as soon as possible. If it causes allergies, it should be treated promptly.
This product has a fine powder and is prone to dust when used. Wear masks, gloves and other protective equipment.
