About Fly Ash Bricks
Fly Ash Bricks are manufactured from fly ash (industrial by-product from thermal power plants), cement, sand, and water — compressed under high pressure and cured. They offer superior dimensional accuracy, higher compressive strength than conventional clay bricks, lower water absorption, and contribute to sustainable construction by recycling industrial waste. Widely used across Tamil Nadu as a cost-effective, durable masonry unit for all types of construction.
Available in bulk supply across Chennai, Chengalpattu, Kanchipuram, Thiruvallur, and all of Tamil Nadu. Site delivery in 24–48 hours. GST invoice on every order.
Applications
Exterior Walls
Load-bearing & infill walls
Foundation
Substructure masonry
Commercial
All commercial construction
Compound Walls
Boundary & compound walls
Industrial
Factory & warehouse walls
Technical Specifications
| Type | Fly Ash Brick (Compressed) |
| Standard | ISI:12894 |
| Size | 230×110×75mm (standard) |
| Compressive Strength | ≥ 7.5 MPa (Class A) / ≥ 5.0 MPa (Class B) |
| Density | 1700 – 1850 kg/m³ |
| Water Absorption | < 12% |
| Efflorescence | Nil to Slight |
| Dimensional Accuracy | ±3mm on length & width |
| Mortar Required | Standard CM 1:6 or 1:5 |
| Colour | Light grey |
Why Choose Fly Ash Bricks?
- ✓Higher compressive strength than clay bricks (7.5 MPa vs 3.5 MPa)
- ✓Dimensionally accurate — less mortar consumption, faster laying
- ✓Low water absorption — less prone to dampness and efflorescence
- ✓Eco-friendly — uses fly ash industrial waste
- ✓ISI:12894 certified — accepted for all structural masonry
Usage Notes & Comparison
Fly Ash Bricks are stronger and more consistent than Red Bricks, and cheaper than AAC Blocks. Best for load-bearing walls, compound walls, and all general masonry. Heavier than AAC but suitable for all conventional construction. Do not use below foundation level in waterlogged areas without DPC.