Silica Fume Powder For Low Permeability Concrete
When added to concrete, silica fume can improve the strength, durability, and overall performance of the concrete. It acts as a filler and nucleation site for the formation of calcium silicate hydrate (C-S-H) gel, which is the primary binder in concrete. This leads to a denser and more tightly packed concrete with a lower porosity, which in turn improves its mechanical properties.
الوصف
Description
Silica fume powder is a byproduct of the silicon and ferrosilicon industries, and it is a highly effective pozzolanic material. When added to concrete, silica fume can improve the strength, durability, and overall performance of the concrete.
One of the key benefits of silica fume powder is its ability to reduce the permeability of concrete. The fine particles of silica fume fill the pores and voids in the concrete, reducing the size and number of capillary channels through which water can flow. This leads to a denser, more impermeable concrete with improved resistance to water and chemical penetration.
The use of silica fume powder in concrete can lead to a stronger, more durable, and more resilient material that is better able to withstand the challenges of harsh environments and heavy use.
Specification
| (After burning)% | >=98 | >=98 | >=98 | >=98 | >=98 |
| DBPOil absorption value cm3/g | 2.4-2.5 | 3.0-3.3 | 2.9-3.2 | 3.2-4.2 | 2.0-3.5 |
| pH value | 6-8 | 6-8 | 6-8 | 6-8 | 5-8 |
| Heating loss% | <=5 | <=5 | <=5 | <=5 | <=5 |
| Ignition loss % | <=6 | <=6 | <=6 | <=6 | <=6 |
| Porosity ml/g | 1.5 | 1.8 | 2 | 1.8 | 1.8 |
Silica fume can also enhance the durability of concrete by reducing its permeability to water, chemicals, and other substances. This helps to protect the concrete from corrosion and other forms of deterioration, especially in harsh environments.
In addition to its use in concrete, silica fume powder is also used in a variety of other applications, including refractory materials, ceramics, and rubber compounds.
الوسم : silica fume powder for low permeability concrete
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