Is All Micro Silica 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.
“There are many micro silica products in the market. How do I know which one is suitable for my project?”
The answer
Not all micro silica products have the same characteristics. Performance depends on factors such as silicon dioxide content, particle fineness, moisture content, loss on ignition, manufacturing consistency, and quality control.
What engineers should evaluate
- Silicon dioxide (SiO₂) content
- Particle size distribution
- Pozzolanic activity
- Moisture content
- Loss on ignition
- Chloride content
- Third-party test reports
- Compliance with ASTM C1240 and IS 15388
SIO92 Micro Silica is produced with a focus on consistency and quality, helping customers achieve reliable concrete performance across projects.
Talk to our technical team
Sio92 Microsilica complies with ASTM C1240 and IS 15388:2003, and is supplied in bags, jumbo bags and bulk tankers with batch test certificates.
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Why Use Micro Silica Instead of Increasing Cement Content?
Higher cement dosage raises heat of hydration, shrinkage and cost. Micro silica densifies the matrix instead — delivering strength and durability more efficiently.
We Already Use GGBS. Why Should We Also Use Micro Silica?
GGBS builds long-term strength and sulfate resistance; micro silica adds early strength, density and water tightness. Most high-performance mixes use both.
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 microsilica is the standard fix.