Кремнезем є побічним продуктом феросиліцієвої промисловості, який використовується як додатковий цементуючий матеріал у бетоні.. It has a number of properties that make it beneficial for concrete production, в тому числі:
- Висока пуцоланова активність, which means that it can react with calcium hydroxide to form additional cementitious material
- Fine particle size, which gives concrete a denser and more uniform microstructure
- Низька потреба у воді, which means that less water is needed to achieve a given workability
These properties of silica fume can lead to a number of benefits in concrete production, в тому числі:
- Підвищена міцність
- Знижена проникність
- Покращена довговічність
- Reduced drying shrinkage
- Reduced heat of hydration
- Reduced water demand
The cost savings associated with using silica fume in concrete production can be significant. Наприклад, the use of 5% silica fume can reduce the amount of cement required by up to 10%, which can lead to a cost savings of 5-10%. Крім того, the use of silica fume can reduce the amount of water required, which can lead to further cost savings.
The overall cost savings associated with using silica fume in concrete production can be significant, and they can be even greater in high-performance concrete applications. Наприклад, the use of silica fume in high-performance concrete can lead to a cost savings of up to 20%.
Here is a table summarizing the cost savings associated with using silica fume in concrete production:
| Власність | Benefit | Cost Savings |
|---|---|---|
| Підвищена міцність | Concrete can withstand more load | До 5-10% |
| Знижена проникність | Concrete is less susceptible to water damage | До 5-10% |
| Покращена довговічність | Concrete can last longer | До 5-10% |
| Reduced drying shrinkage | Concrete is less likely to crack | До 5-10% |
| Reduced heat of hydration | Concrete does not heat up as much as it cools | До 5-10% |
| Reduced water demand | Less water is needed to achieve a given workability | До 5-10% |
Загалом, the use of silica fume in concrete production can lead to significant cost savings. These savings can be even greater in high-performance concrete applications.
