USE OF PIONEER RICE HUSK ASH
For Strength :PIONEER RICE HUSK ASH has the potential to be used as a substitute silica fumes or micro silica as a much lower cost , without compromising on the quality aspect . Adding PIONEER RICE HUSK ASH 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 :PIONEER RICE HUSK ASH 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 PIONEER RICE HUSK ASH 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 PIONEER RICE HUSK ASH to concrete lowers the heat of hydration by as much as 30 % and prevents formation of cracks during casting.
TECHNICAL SPECIFICATIONS :
|SiO2 – Silica||85 % minimum|
|Humidity||2 % maximum|
|Particle size||25 microns|
|Loss on ignition at 800°C||4 % maximum|
Other Uses of PIONEER RICE HUSK ASH :PIONEER RICE HUSK ASH acts as a very good insulator. PIONEER RICE HUSK ASH 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.
SOME DEFINITIONS :Amorphous Silica : 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 .
|Particle Size , Mesh Size and Grit No.|
|I.S.Specification||British Standard||American Standard||Grit No|
|5.60 mm||3 mesh||No.3.50||-|
|4.75 mm||3.5 mesh||No.4||-|
|4.00 mm||4 mesh||No.5||-|
|3.35 mm||5 mesh||No.6||-|
|2.80 mm||6 mesh||No.7||-|
|2.36 mm||7 mesh||No.8||-|
|2.00 mm||8 mesh||No.10||-|
|1.70 mm||10 mesh||No.12||-|
|1.40 mm||12 mesh||No.14||-|
|1.18 mm||14 mesh||No.16||-|
|1.00 mm||16 mesh||No.18||-|
|850 microns||18 mesh||No.20||-|
|710 microns||22 mesh||No.25||24|
|600 microns||25 mesh||No.30||30|
|500 microns||30 mesh||No.35||36|
|425 microns||36 mesh||No.40||-|
|355 microns||44 mesh||No.45||46|
|300 microns||52 mesh||No.50||54|
|250 microns||60 mesh||No.60||60|
|212 microns||72 mesh||No.70||70|
|180 microns||85 mesh||No.80||80|
|150 microns||100 mesh||No.100||90|
|125 microns||120 mesh||No.120||100|
|106 microns||150 mesh||No.140||120|
|90 microns||170 mesh||No.170||-|
|75 microns||200 mesh||No.200||150|
|63 microns||240 mesh||No.230||180|
|53 microns||300 mesh||No.270||220|
|45 microns||350 mesh||No.325||-|
|38 microns||400 mesh||No.400||300|
|32 microns||450 mesh||No.450||340|
|25 microns||500 mesh||No.500||380|
|20 microns||635 mesh||No.635||450|