NSF POwder is a dry powdered admixture. It is produced through such a process: 1) sulphonating refined naphthalene with sulfuric acid, 2) condensing with formaldehyde, 3) neutralization, and 4) filtering. It conforms to GB8076-1997 and is mainly used for various high-strength concrete, steel concrete, prestressed concrete, large formwork concrete, slipforming concrete etc.
1.Technical Performances and Applicable Ranges:
1. Dosage： 0.5～1.0％( as weight of cement). Water reducing rate：17-21％.
2..Keep strength unchanged, Use of this product can save cement consumption by 15-20%.
3..When dosage is 0.7%(solid), Slump can be increased by 10cm.
4.The product is suitable for manufacturing high strength concrete, Accelerating strength concrete, flowing state concrete, pre-cast concrete and pre-stressed concrete, etc.
5.Compressive strength, bending strength, impermeability and freeze-thaw resistance are remarkably increased.