Silica Fume NR920 is a dry powder available in two forms,densified silica fume and undensified silica fume. .
Silica Fume NR920 is a pozzolanic material that consists primarily of fine silicon dioxide particles in a non-crystalline form.
Silica Fume NR920 meets the requirements of ASTM C-1240 and contains a minimum of 92% silicon dioxide (SiO2)
Technical Data :
| Index items | Standard Value |
| SiO2(Silicon Dioxide) | Min. 92.0% |
| Fe2O3 (Iron Oxide) | Max. 0.50% |
| Al2O3(Aluminium Oxide) | Max. 0.70% |
| CaO(Calcium Oxide) | Max. 0.50% |
| MgO(Magnesium Oxide) | Max. 0.50% |
| K2O(Potassium Oxide) | Max. 0.70% |
| Na2O(Sodium Oxide) | Max. 0.40% |
| Moisture Content(H2O) | Max. 1.5% |
| Loss on Ignition(L.O.I) @ 975℃ | Max. 3.0% |
| Percent Retained On 45μm (325 sieve) | Max. 1.5% |
| Bulk Density | 250-300kg/m3 |
Silica Fume CAS # : 69012-64-2
Silica Fume Packing : 500kg/jumbo bags, and 20kg and 25kg small plastic woven bags.