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|Grade Standard||Technical Grade|
|Packaging Size||25 Kgs|
( Rice Husk Ash )
RHA is a good super-pozzolans . RHA can be used in a big way to make special concrete mixes There is a growing demand for fine amorphous silica in the production of special cement and concrete mixes ,high performance concrete ,high strength, low permeability concrete, for use in bridges, marine environments , nuclear power plants etc.
USE OF RICE HUSK ASH
For Strength :
Adding RHA to the concrete mix even in low replacement will dramatically enhance the workability , strength and impermeability of concrete mixes , while making the concrete durable to chemical attacks , abrasion and reinforcement corrosion , increasing the compressive strength by 10% - 20 % .
For water proofing :
RHA has excellent water resistance ( impermeability ) properties and is used in waterproofing compounds to give amazing results. it reduces the water penetration by as much as 60 % .
For Better Concrete in Marine environment:
Adding RHA to concrete and paints helps to reduce the chloride ion penetration by as much as 50 % into the structure , thus improving life of the building.
For Lower heat of Hydration :
Adding RHA to concrete lowers the heat of hydration by as much as 30 % .
RHA acts as a very good insulator . RHA is also used for insulation of molten metal in tundish and ladle in slab caster .
The temperature of molten metal in the ladle is around 1400 degrees centigrade and above . When this metal flows from ladle to tundish , the temperature drops to around 1250 degrees . This reduction in temperature leads to choking and causes breakdown in the slab caster.
When this RHA is spread as a coating over the molten metal in the tundish and in ladle , it acts as a very good insulator and the temperature is maintained and does not cool down quickly , hence reducing the breakdown time of the casting.
Rice Husk is burnt in controlled temperatures which is below 700 degrees centigrade . This ash generated is amorphous in nature . The transformation of this amorphous state to crystalline state takes place if the ash is exposed to high temperatures of above 850 degrees centigrade .