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
ABSORB LESS HEAT
COST EFFECTIVE
ECO FRIENDLY
NO ENV. DAMAGE
STRONGER AND UNIFORM
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 |