WONDERING...WHAT IS FLY ASH?

Fly ash is a byproduct from burning pulverized coal in electric power generating plants. During combustion, mineral impurities in the coal (clay, feldspar, quartz, and shale) fuse in suspension and float out of the combustion chamber with the exhaust gases. As the fused material rises, it cools and solidifies into spherical glassy particles called fly ash. This can be used as a reinforcing agent in the manufacture of bricks, concrete etc.

AND WHY SHOULD YOU USE THEM?

With the advent of greener construction and increased awareness of environmental issues, major construction houses and even the government are moving towards using fly ash bricks. Here are some advantages of fly ash bricks.

LIGHT WEIGHT

With light bricks, this stress and tension are reduced manifold.

ABSORB LESS HEAT

Fly ash bricks absorb less heat suitable for the Indian climate.

COST EFFECTIVE

Overall fly ash bricks help decrease costs during various stages of construction.

ECO FRIENDLY

Production of fly ash bricks requires no fossil fuel and hence does not lead to the emission of greenhouse gases.

NO ENV. DAMAGE

No top-soil damage in the production of fly ash bricks.

STRONGER AND UNIFORM

Fly ash bricks are stronger, more uniform and denser as compared to clay bricks.
SPECIFICATIONS
Colour Grey
Basic Ingredients Fly Ash + Cement + Sand + Stone Dust + Water
Density (kg / cubic meter) 1,600 - 1,700
Compressive Strength (kg / cm sq. 80 - 100*
Water Absorption <15%
Drying Shrinkage 0.03%
Breakage in Transit Less than 2%
Efflorescence Nil
Eco - Friendly Yes
Mortar saving (during laying) 10 - 15%
Mortar saving (during plaster) 10 - 15%

*Please note - Compressive Strength can be increased as per the customers requirement.

COMPARISON WITH OTHER BRICKS
Technical Evaluation Clay Brick Auto Claved Brick Fly Ash Brick
Porosity (Vacuum Process) % 35.84 73.92 28.56
Density (gm/cc) 1.90 0.60 1.70
Thermal Conductivity (W/mK) at 40°C 1.50 0.24 0.22
Cracking Test at Elevated Temp at 200°C No Crack No Crack No Crack
Cracking Test at Elevated Temp at 400°C No Crack No Crack No Crack
Cracking Test at Elevated Temp at 600°C No Crack No Crack No Crack
Cracking Test at Elevated Temp at 800°C No Crack No Crack No Crack
Cracking Test at Elevated Temp at 1000°C Bulged e-shaped No Future test after 800°C since brick cracked No Crack
Pyrometric Cone Equivalent (Melting Point) 1200°C 1440°C 1145°C
Acid Resistant Test (%) Loss 21.53 20.51 8.38
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