DSF 900: The Secret Weapon for High-Performance Mixes
DSF 900 stands out as a premium densified silica fume engineered to deliver exceptional performance in high-performance concrete applications. With its very small particle size, DSF 900 ensures superior packing efficiency, reducing porosity and enhancing durability. Its high pozzolanic activity index accelerates hydration reactions, significantly improving early and long-term compressive strength.
| Test Item | ASTM C 1240 | BS EN 13263:2005 | AS/NZS 3582.3:2016 | JIS A 6207:2006 | Typical |
| SiO2 (%) | > 85 | > 85 | > 85 | > 85 | 91.05 |
| MgO (%) | < 5 | 0.33 | |||
| Elemental Silicon (%) | < 0.4 | < 0.4 | 0.09 | ||
| SO3 (%) | < 2.0 | < 3.0 | < 3.0 | 0.84 | |
| CL (%) | < 0.3 | < 0.1 | 0.002 | ||
| Free CaO (%) | < 1.0 | < 1.0 | 0.55 | ||
| Total Alkalis (Na2O) (%) | 0.75 | ||||
| Moisture (%) | < 3.0 | < 3.0 | < 3.0 | 0.61 | |
| LOI (%) | < 6.0 | < 4.0 | < 6.0 | < 5.0 | 2.33 |
| Specific Surface (BET) (m2/g) | > 15 | 15--35 | > 15 | 18.53 | |
| Activity Index (%) | > 105 @ 7days | > 100 @28 days | > 95 @ 7days | 109 @ 7days | |
| >105 @ 28days | |||||
| Retained on 45-μm (No.325) (%) | < 10 | 3.52 | |||
| Variation from Avg. Retained on 45 μm (No. 325) (%) | < 5 | 1.11 | |||
With very small particle size and high pozzolanic activity index, micro silica can improve compression resistance, flexure resistance, permeability resistance, corrosion resistance, impact resistance and wear resistance of cement and concrete. Extended service life of cement and concrete products.
Concrete i.e UHPC, HPC, PRC, Shotcrete, Impact and abrasion resistant concrete, Prestressed Concrete etc.
Mixing cement. I.e Oil Well Grouting.
Wall exterior insulation material.
Mortar, grouting agent, grouting material, etc.
Ceramics material.
Others, such as waterglass industry, thermal insulation materials etc.
