JEE Fly Ash Bricks

JEE FLY ASH PRODUCTS

Factory:

No.20, Keerapakkam, chennai-48,

Off:

#8/32, 2^nd Main road, Newcolony, Chromepet, Chennai-44.

JEE Fly Ash Bricks.

• An environment friendly cost saving building material.

• Three times stronger than conventional bricks with consistent strength.

• Ideally suited for internal, external, load bearing and non-load bearing walls.

• With higher strength / weight ratio (about 3 to 4 times that of burnt clay bricks) aid in designing stronger, yet more economic structures.

JEE Fly Ash Bricks are having higher strength as compared to conventional red clay bricks. Since the raw material of the brick is fire resistant thus the construction is also fire resistant. Due to the manufacturing on the automatic machines-uniform size and structure of bricks is achieved resulting in good finish and aesthetic appearance. These bricks are 10% lighter in weight than conventional clay bricks cause reduction in dead weight of wall thereby substantial saving in the steel and concrete elements.

Frequently Asked Questions:

1. What are Fly Ash Bricks?

            Fly Ash bricks are environment friendly building material, superior and modern alternative for conventional red clay bricks.

2. What is Fly Ash?

           Fly ash is the ash removed from the exhaust gas of burning coal at power plants to generate electricity. The ash is removed from the exhaust by air pollution control equipment such as electrostatic precipitators before the exhaust is emitted through stacks or chimneys into the atmosphere. Thus, fly ash is a by-product of burning coal for heating and generation of electricity.

3. What are the advantages of the fly ash brick offer over conventional bricks?

FLY ASH BRICK                                               NORMAL CLAY BRICK

Uniform pleasing colour like cement                   varying colour as per soil

Uniform in shape and smooth in finish                uneven shape as hand made

Dense composition                                           lightly bonded

No plastering required                                       Plastering required       

Lighter in weight                                                heavier in weight

Compressive strength is around 100 Kg/cm2      Compressive strength is around 35 Kg/cm2

Less porous                                                      More porous

Thermal conductivity 0.90-1.05 W/m2 ºC             Thermal conductivity 1.25 – 1.35 W/m2 ºC

Water absorption 6-12%                                    Water absorption 20-25%

4. What are the raw materials used in manufacturing fly ash bricks?

RAW MATERIALS USED

1) Fly Ash

2) Lime

3) Gypsum

4) Creaser powder.

5) River Sand.

5. What is the Properties of Fly Ash Bricks?

Appearance:

Fly Ash Bricks have a pleasing colour like cement, are uniform in shape and smooth in finish, they also require no plastering for building work. The bricks are of dense composition, uniformly shaped with / without a frog, free from visible cracks, warp-age, organic matter, pebbles and nodules of free lime.They are lighter in weight than ordinary clay bricks and less porous too. They come in various sizes, but generally are similar to the sizes of clay bricks.

Structural Capability:

These bricks can provide advantages being available in several load-bearing grades, savings in mortar plastering, and giving smart looking brickwork. High compressive strength eliminates breakages/wastages during transport and handling, the cracking of plaster is reduced due to lower thickness of joints and plaster and basic material of the bricks, which is more compatible with cement mortar. Due to its comparable density the bricks do not cause any extra load for design of structures and provides better resistance for earthquake loads due to panel action with high strength bricks. Compressive strength of fly ash sand lime bricks is avg. 9.00 N/mm2 (as against 3.50 N/mm2 for handmade clay bricks).

Workability:

The blocks have an easy workability and high compressive strength eliminates breakages / wastage during handling giving a neat finish, with lower thickness of joints and plaster. The construction technique remains the same as regular bricks ensuring easy change of material, without requiring additional training for the masons.

Applicability:

The blocks being available in several load bearing grades are suitable for use: -

• Load bearing external walls, in low and medium size structures.

• Non-load bearing internal walls in low and medium size structures.

• Non-load bearing internal or external walls in high-rise buildings.

Thermal  and sound properties:

Thermal conductivity is 0.90-1.05 W/m2 ºC (20-30% less than those of concrete blocks). These bricks do not absorb heat; they reflect heat and gives maximum light reflection without glare.

 It provides an acceptable degree of sound insulation.

Fire and vermin resistance:

Fly Ash Bricks have a good fire rating. It has no problems of vermin attacks or infestation.

Durability and moisture resistance

These blocks are highly durable, after proper pointing of joints, the bricks can be directly painted in dry distemper and cement paints, without the backing coating of plaster. Rectangular faced with sharp corners, solid, compact and uniformly Water absorption is 6-12% as against 20-25% for handmade clay bricks, reducing dampness of the walls.

Toxicity and Breath-ability:

There are no definite studies on the toxic fume emissions or the indoor air quality of structures built with fly ash bricks, though claims of radio active emissions by these blocs have been made at some scientific forums. Fly ash as a raw material is very fine and care has to be taken to prevent from being air-borne and causing serious air pollution as it can remain airborne for long periods of time, causing serious health problems relating to the respiratory system. Though block manufactured from fly ash has no such problems.

Sustainability:

(Environmental impacts)

Fly ash is a cocktail of unhealthy elements – silica, aluminium, iron oxides, calcium, magnesium, arsenic, mercury, and cadmium, and poses serious environment and health hazards for a large population. But the brick is better off, for fly ash changes into a non-toxic product when mixed with lime at ordinary temperature as the calcium silicate hydrates and forms a dense composite inert block. Thus having the potential as a good building material, while offsetting about 100million tonne’s of fly ash annually produced in India by the numerous thermal power plants, which could cause serious contamination of land, groundwater and air.

The important benefits of Fly Ash Bricks:

• Fly Ash bricks are having higher strength as compared to conventional red clay bricks. Since the raw material of the brick is fire resistant thus the construction is also fire resistant. Due to the manufacturing on the automatic machines-uniform size and structure of bricks is achieved resulting in good finish and aesthetic appearance. These bricks are 10% lighter in weight than conventional clay bricks cause reduction in dead weight of wall thereby substantial saving in the steel and concrete elements.

• Cost less to produce – at least 10% less than concrete bricks and 20% less than clay bricks. Plastering mostly not need.

• Save construction cost – Due to the uniform shape and size of the fly ash brick, it saves labor in laying bricks by about 15%. This translates into an estimated 7% reduction in labor cost in laying each brick, which is quite substantial and ideal for cold storage room and serves energy cost in air-conditioning.

• Use less energy – Much energy is consumed in heating clay bricks in kilns. By using fly ash bricks instead of clay bricks, much energy is saved in brick manufacturing.

• Reduce air pollution – Much fossil fuel is used in heating clay bricks in kilns. Burning such fuel generates air pollution and greenhouse gas (CO), contributing to global warming. By manufacturing fly ash bricks (at room temperature) instead of clay bricks (at over 2,000 o F), emission of air pollutants and greenhouse gas is avoided at brick plants, which helps to reduce air pollution and global warming.

• Cleans indoor air – Recent research has shown that by using fly ash bricks indoors, the bricks adsorb mercury from the indoor air, causing the indoor air to be cleaner than the outdoor air.

• Fly Ash Brick is not only a low-cost, high-quality brick; it is also the “Green brick” of the future. Widespread use of the Green brick in the future would contribute not only to lower construction cost for built environment but also to a cleaner and healthier environment.

For More Details Contact:

JEE Fly Ash Products,

Factory:

No.20, Keerapakkam, chennai-48,

Off:

#8/32, 2^nd Main road, Newcolony, Chromepet, Chennai-44.

Tel: 044 22 41 41 51.

Mobile: 93 81 00 02 14.