Why Fly Ash Bricks ?
Manufacturing clay brick requires kilns fired to high temperature wastes energy, pollutes air and generates greenhouse gases that contribute to global warming. In contrast, fly ash bricks are manufactured at room temperature. They conserve energy, cost less to manufacture, and don't contribute to air pollution or global warming. A basic comparison:

CONVENTIONAL CLAY BRICKS

FLY ASH BRICKS

Margins are less by ½ inch

Full and accurate Size

Varying colour as per soil

Uniform pleasing colour like cement

Uneven shape as hand made

Uniform in shape and smooth in finish

Lightly bonded

Dense composition

Plastering required

No plastering required

Heavier in weight

Lighter in weight

Compressive strength is around 35 Kg/cm2

Compressive strength is around 55 to 100 Kg/cm2 (as required)

More porous

Less porous

Thermal conductivity 1.25 – 1.35 W/m2 ºC

Thermal conductivity 0.90-1.05 W/m2 ºC

Water absorption 20-25%

Water absorption 11-15%

Require soaking in water

Only sprinkling of water before use is enough.

10% to 15 % loading and handling loss

3% to 5% loading and handling loss

Fix sizes

Variable sizes (as required)

Efflorescence Hight

Efflorescence Slight

Sizes
• [6 inches] – 9” x 4” x 6”
• [4 inches] – 9” x 3” x 4”
• Available in other suitable sizes depending on the quantity

Appearance
• Pleasing colour like cement
• Rectangular faced with sharp corners, solid, compact and uniformly dense composition
• Uniformly shaped with / without a frog, free from visible cracks, warp-age, organic matter, pebbles   and nodules of free lime.
• Lighter in weight than ordinary clay bricks
• Less porous
• Colour can be altered with the addition of admixtures
• Come in various sizes

Structural Capability
• Compression strength 60 to 250 kg/Cm Sq.
• Available in several load-bearing grades
• Savings in mortar plastering
• Gives smart looking brickwork
• High compressive strength
• Eliminates breakages/wastages during transport and handling
• 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.

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

Sound insulation
• Provides an acceptable degree of sound insulation.

Fire and vermin resistance
• Have a good fire rating
• No problems of vermin attacks or infestation.

Durability and moisture resistance
• Highly durable
• After proper pointing of joints, directly pop / gypsum can be applied or painted in dry distemper and   cement paints, without the back coating of plaster
• Water absorption is 11-15%

Composition
• Fly Ash
• Cement
• Lime
• Gypsum
• Stone Dust

 

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