About Fly Ash Bricks
Fly Ash Cement Bricks are manufactured from the main residue of the thermal plant named fly ash mixed with cement, sand/stone dust, and compressed at very high pressure. Fly ash bricks are nowadays used worldwide with gaining popularity over clay bricks.
The various detailed advantages of fly ash bricks are as below:
1. Appearance:
The appearance of fly ash cement bricks is very attractive due to their pleasing color like cement, uniform size, and smooth finish. Due to uniform size, mortar required for walls and plastering reduces almost by 40-50%. Plaster of Paris(Gypsum plaster) can be applied directly without a baking coat of plaster. These bricks are free from cracks, wrap age, organic matter, pebbles, and nodules of free lime.
2. Strength:
The compressive strength of fly ash bricks is very high (10-12 N/mm2). Due to high strength no breakages/wastages during transport and handling. The lower thickness of joints and plaster reduces cracking in plaster. These bricks do not cause any extra load for the design of structures and provide better earthquake resistance. It improves the strength over time and offers greater strength to the building.
3. Thermal Properties:
The thermal conductivity of fly ash bricks is 0.90 – 1.05 W/m2. They absorb less heat. The pozzolanic reaction between fly ash and lime produces less heat. It keeps your building cooler in summer, hence most suitable for Indian climates.
4. No Efflorescence & Durability:
Fly ash bricks are highly durable and less permeable. The lower permeability can efficiently reduce the effect of efflorescence on bricks. These bricks are less porous, absorb less water and reduce dampness on the walls. It is also highly resistant to attack by mild acid, water, and sulfate.
5. Sound Insulation:
Construction with fly ash bricks provides decent sound insulation to the building.
6. Fire Resistance:
Fly ash bricks are highly fire-resistant.
7. Sustainability:
Fly ash bricks are environmentally friendly as they are made of waste materials from coal combustion in thermal power plants. There is no pollution or environmental damage, considered as a white category product.
8. Buildability:
Fly ash bricks have easy workability and absorb less water. They do not require soaking in water for 24 hours. The sprinkling of water before use is enough. The construction technique is the same as clay brick construction and does not require extra masons.
9. Availability:
These bricks are generally available closer to the thermal power plants. However, finding dealers in all major cities and towns wouldn’t be a problem.
10. Cost:
The same number of fly ash bricks will cover more areas than clay bricks. Consumption of mortar is also low. Requires less labor. The cost of fly ash bricks is approximately 30% lower than clay bricks.
11. Applicability:
Fly ash bricks are lightweight, so it is suitable for multi-story structures. Less weight means less stress on the building. These bricks can be used in load-bearing external walls in low/mid structures, non-load bearing internal walls in low/mid structures, and non-load bearing internal or external walls in high-rise buildings.
Properties
SIZE: 230MM x 110mm x 75mm
COLOUR : Cement Gray
BULK DENSITY : 1750-1850 kg/m3
UNIT WEIGHT : 3.0-3.2kg
WATER ABSORPTION : 5-6%
COMPRESSIVE STRENGTH : 100-120 kg/cm2
