We Already Use GGBS. Why Should We Also Use Silica Fume?
GGBS builds long-term strength and sulfate resistance; silica fume adds early strength, density and water tightness. Most high-performance mixes use both.
“Our batching plant already uses GGBS. Why do we need Silica Fume as well?”
The answer
GGBS and Silica Fume are complementary materials rather than alternatives.
GGBS contributes to long-term strength development and durability, while Silica Fume significantly improves concrete density, reduces permeability, and enhances both early and long-term strength.
In many high-performance concrete applications, both materials are used together because each contributes different performance benefits.
GGBS improves
- Long-term strength
- Sulfate resistance
- Reduced heat of hydration
SIO92 Silica Fume improves
- Early strength
- Concrete density
- Water tightness
- Abrasion resistance
- Chloride resistance
- Bond strength
Together, they help produce durable, high-performance concrete suitable for demanding infrastructure projects.
Talk to our technical team
Sio92 Silica Fume complies with ASTM C1240 and IS 15388:2003, and is supplied in bags, jumbo bags and bulk tankers with batch test certificates.
Request a quoteMore insights
Why Use Silica Fume Instead of Increasing Cement Content?
Higher cement dosage raises heat of hydration, shrinkage and cost. Silica Fume densifies the matrix instead — delivering strength and durability more efficiently.
Why Is My Concrete Failing Permeability and Durability Tests?
A mix can hit its strength target and still fail RCPT or water penetration. The cause is capillary porosity — and silica fume is the standard fix.
Is All Silica Fume the Same? How Do I Choose the Right Product?
Performance depends on SiO₂ content, fineness, moisture, LOI and manufacturing consistency. Here is the checklist engineers should use before approving a supplier.