Our company manufactures poly naphthalene sulphonate superplasticizer.Three types:SNF-A,SNF-B and SNF-C.
SNF-A Superplasticizer
1.Product General
SNF-A Superplasticizer 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.
2.Standard Quality Targets:
item | target | item | target |
appearance | Brownish powder | PH Value | 7-9 |
Solid content | 92%Min | Neat cement Grout flowability | ≥250 mm |
Na2SO4 | 5%Max | fineness | 0.315mm Mesh<15 |
Chloride | 0.3%Max | Surface Tension | 71±1×10-3N/ m |
3.Main technical performances and Targets(DosageC×0.8)
Tested items | Standard Data | SNF-A | ||
Class 1 | Class 2 | |||
Water reducing rate≥ | 12 | 10 | 20 | |
Bleeding ratio≤ | 90 | 95 | 15 | |
Air content | 3.0 | 4.0 | 2.0 | |
Setting time Difference(min) | Initial setting | 90120 | -55 | |
Final setting | -42 | |||
compressive strength ratio | 1d | 140 | 130 | 156 |
3d | 130 | 120 | 152 | |
7d | 125 | 115 | 146 | |
28d | 120 | 110 | 138 | |
Shrinkage ratio | 90d | 135 | 82 | |
Corrosion resistance | Yes or No | Yes | ||
