Densified Silica Fume is the most revolutionary concrete additive to have been developed in recent times. The use of densified silica fume offers concrete manufacturers significant opportunities to substantially improve the strength, durability, finish and economy of their concrete products and concrete applications also it can be used with conventional construction equipment.
Silica fume can be delivered in bulk and jumbo bags, from reputable international sources conforming to International Standards. Following is the most commom benefits could be drived on using microsilica.
Strength
Economy
- Increased compressive strength.
- Increased flexural strength.
- Greater strength development.
- Potentially smaller structural section.
- Less rebound & wastage in shortcreting increase productivity.
- Cement replacement opportunities.
Durability
General
- Increased concrette density.
- Improved impremeability to
agressive agent.
- Reduced susceptibility to sulphate attack & alkali-aggregate expansion.
- Improved cohesiveness reduces segregation & pumpability.
- Reduced bleeding allows early finishing & effloescence.
- Improved finishing & electrical resistivity.
Due to many benefits imparted to concrete, it is highly recommemded for use in the following application :-
- Mining & Tunnelling.
- High rise buildings.
- For producing all concrete products including readymix concrete.
- Motorways, bridges & dams etc
Refractory
High Temperature: Microsilica reacts with alumina forming mullite which gives a castable high strength at up to 1700°C
Heat Up: Improved green strength
Flow: Reduced water demand when casting
Dense Castables: Void filling for density for lower permeability, higher strength and higher thermal conductivity
Other
- Casting
- Insulation
- Non cementitious building products
