high performance silica fume in concrete

Silica fume (microsilica ) is a high performance, densified silica fume powdered product, derived as a by-product from the production of Ferro Silicon using the arc furnace method. Used in pre-mixed concrete for enhancing mechanical properties of concretes with special performance requirements, including increased strength, reduced permeability, improved abrasion resistance and increased corrosion resistance.

Properties: 

- Higher compressive strength 

- Higher Particle Packing Density 

- Lower Permeability 

- Wear resistance 

- Freeze & Thaw resistance 

- High electrical resistivity

- Resistance to chemical attacks 

- Increased insulation properties 

Uses in Concrete: 

- Water retaining Structures like dams, canals etc. to impart higher strength & lower permeability 

- Bridges & marine structures for Durability, wear resistance, less corrosion and longer life of structures

- Pavements like runways & industrial heavy duty floorings to achieve abrasion resistance 

- Multistoried buildings to get higher strength & lesser element sizes 

Technical Specifications: 

Chemical And Physical Properties: ASTM C1240 – 14 

Chemical Properties: SiO2 % : 85% to 95 % 

Moisture %: < 3.0 

L.O.I. %: < 6.0 

Physical Properties: Specific Surface (Cm2/gram): > 15000 Accelerated Pozz.

Strength Activity Index (%): > 105 

Retained on 45 Microns Sieve (%): < 10 

Variation from avg. retained on 45 Microns (%): < 5