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Builmix Microsilica
Builmix Microsilica (High quality densified Microsilica)
Builmix Microsilica is a high-pozzolanic activity densified microsilica for concrete and mortar.
Uses:
Normally used as a Cement replacement in concrete.
Advantages:
- Increase density and strength of concrete.
- Reduces plastic dry shrinkage.
- Provides protection against chemical attack.
- Reduces the penetration of chloride ions in concrete.
- Easily added to the batching plant without costly extra installation.
- Improves the fine aggregates grading and eliminate the gap grading problems through the finer portions.
Categories: Microsilica, Silica
Standard Compliance
Builmix Microsilica meets the chemical and physical requirements of ASTM C1240.
Properties
| # | Property | Value |
|---|---|---|
| 1 | Color | Grey |
| 2 | Bulk Density | @ 650 kg/㎥ |
| 3 | SiO2 content % | > 90 % |
| 4 | Physiological effect | Natural |
| 5 | Thermal Stability | -10˚C to + 50˚C |
| 6 | Oversize % | < 10% |
| 7 | Loss on ignition % | < 6.0% |
| 8 | Moisture content % | < 3.0% |
| 9 | Accelerated pozzolanic activity index | > 105.0% |
| 10 | Alkali equivalent Na2O % | < 0.60% |
| 11 | Reduction of mortar expansion | > 80.0% |
Recommendation
Microsilica or Silica fume should help in increasing the resistance of concrete to Chloride ions attack BUT it is not the only factor which affects this feature. Using a low w/c ratio and the most proper value of fine materials accompanied with a high pozzolanic reactivity material are the main parameters which affect the concrete resistance to chloride ions attack.
Additional Information
