Condensed Silica Fume (Microsilica), SiO2 90% (min)

Densified Microsilica SiO2 90% min

Densified Microsilica with Minimum SiO2 Content 90%

  • High Pozzolanic Activity Index.
  • High Compressive Strength.
  • Low Loss on Ignition (LOI).
SiO2 (Amorphous)90% min
SO3typical 1.03%
Fe2O3typical 0.93%
Free CaOtypical 1.05%
Moisture3.0% max
LOI (Loss on Ignition)6.0% max, typical 2.10%
Specific Surface (BET)15 m2/gram min
Bulk Density500-700 kg/m3
Pozzolanic Activity Index – 7 days accelerated curing105% min
Retained on 45 Micron Sieve10% max
Variation from avg. retained on 45 Micron Sieve5% max


ACC® Microsilica Grade 90D conforms to the mandatory requirements of the relevant standards from:

  • American Society for Testing and Materials (ASTM C 1240).
  • European Committee for Standardisation.

Quality Control

ACC® Microsilica is certified according to ISO 9001.

The chemical composition and physical properties are regularly tested in accordance with international standards.


The product is supplied in a range of packaging:

  • 950/1000kg double plastic woven jumbo bag.
  • 20/25kg woven bags with PE liner.
  • 10/12/20kg water-degradable paper bag.
  • Special packaging can be supplied on request.


Once received, our team will get in touch with you soon.

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