Pioneer Carbon
Pioneer Products / Rice Husk Ash

Rice Husk Ash

Rice Husk Ash

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
Colour Grey
Loss on ignition at 800°C 4 % maximum
pH value 8

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.

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.

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 .

Green Concrete : Green Concrete as the name suggests is eco friendly and saves the environment by using waste products generated by industries in various forms like rice husk ash ,micro silicaetc. to make resource-saving concrete structures .Use of green concrete helps in saving energy, emissions, waste water Green concrete is very often also cheap to produce as it uses waste products directly as a partial substitute for cement, thus saving energy consumption in production of per unit of cement . Over and above all green concrete has greater strength and durability than the normal concrete.

High Performance Concrete : Also known as HPC , the name given to mixtures with high workability and very high early strengthsand long term durability .

Silica Fumes : Silica Fumes ( very fine non crystalline silicon dioxide ) or Micro silica is a waste product of induction arc furnace in the ferro silicon industry.

Super – Pozzolans : are materials having high silica content of above 85 %

Particle Size , Mesh Size and Grit No.
I.S.Specification British Standard American Standard Grit No
IS.460.62 Specification.B.S.410.60 Specification.ASTM.E 11.79
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