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Microfume® Hydraulic

Amorphous light grey silicon oxide powder, obtained by filtering the dust extracted from the production of silico-calcium alloy in an electric arc furnace.

Microfume® Hydraulic is different due to its high CaO content, used in fast setting concrete. Concretes with Microfume® Hydraulic have higher strength than the average at an early age (24h and 48h) and need less superplasticizer addition in the mix design.

We are confident that we can satisfy your unique Microfume requirements. Just contact us to discuss them.

Microfume Hydraulic Physical and Chemical Characteristics:

Analysis** EN Norm project Typical Frequency
SiO₂ (%) Min. 70 72 Weekly
Total CaO (%) 15 – 25 18 Weekly
Free CaO (%) Max. 1.0 0.7 Weekly
Free C (%)
3.5 Weekly
Na₂O eq (%) To report 1.10 Weekly
SO₃ (%) Max. 2.0 0.8 Weekly
Free Si (%) Max. 0.7 0.3 Monthly
CI (%) Max. 0.3 0.05 Monthly
Loss on ignition
(at 950C during 1h)(%)
Max. 6.5 5.0 Weekly
H₂O (%)
0.20 Weekly
Specific surface
(BET) (m²/g)
10 – 30 13 Monthly
Activity Index
at 28 days
Min. 95 105 Monthly
Bulk density
(kg/m³)

550 -700 Daily
pH
11.5
Brightness L*
45 – 50

** % by weight of dry mass *** Lower limit detection


Transport
Bulk in trucks or in bags.


Storage
Dry storage. Avoid contact with moisture.


Handling
Product totally amorphous. Material Safety Data Sheet available on request.


Applications
High Performance Concretes. Self-levelling Concretes. Shotcretes.


Origin
France.


Quality Control
Complies with the ISO 9001 norm.


Environment
Complies with the ISO 14001 norm.


Safety
Complies with the OHSAS 18001 norm.