85% Densified Microsilica (Silica Fume) 85D
85% Fumée de silice densifiée (85D) is a type of silica fume that has been processed to increase its bulk density. This makes it easier to handle and transport, and can also improve its performance in concrete.
85% Fumée de silice densifiée, is a byproduct of the production of silicon and ferrosilicon alloys. It is a highly reactive pozzolan with a high silica content of over 85% and a bulk density of around 550-700 kg/m3. The specific surface area of 85% Densified Silica Fume is very high, ranging from 15,000 à 30,000 m2/kg, making it an ideal supplementary cementitious material for enhancing the strength, durability, and workability of concrete.
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Paramètres
Property | Value |
---|---|
SiO2 (Amorphous) | 85% min |
SO3 | 2.0% max |
Cl | 0.3% max |
Free CaO | 1.0% max |
Moisture | 3.0% max |
LOI (Loss on Ignition) | 6.0% max, typical 2.10% |
Specific Surface (BET) | 15 m2/gram min |
Bulk Density | 550-700 kg/m3 |
Pozzolanic Activity Index – 7 days accelerated curing | 105% min |
Retained on 45 Micron Sieve | 10% max |
Variation from Avg. Retained on 45 Micron Sieve | 5% max |
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Fondé en 2001, HSA est l'un des principaux fournisseurs de fumées de silice et d'abrasifs en Chine, et également la source premium de produits hautes performances pour les industries du béton et des abrasifs.