Dharani Projects

Fly Ash AAC (Autoclaved Aerated Concrete) Blocks are eco-friendly, lightweight building materials made from fly ash, cement, lime, and aluminum powder, offering excellent thermal insulation, fire resistance, and soundproofing, making construction faster and more energy-efficient than traditional bricks.

• Ingredients: Fly ash (a power plant byproduct), OPC cement, lime, aluminum powder (foaming agent), and water.
• Process: A slurry is mixed, and aluminum powder creates hydrogen gas bubbles, aerating the mixture. It's then cured in a high-pressure steam autoclave, creating strong calcium silicate.
• Key Properties & Benefits
  • Lightweight: Up to 80% air, making them 1/3 the weight of red bricks, reducing transport and handling costs.
  • Thermal Insulation: Micropores provide excellent heat insulation, reducing cooling/heating costs.
  • Fire Resistance: Non-combustible, offering fire ratings of 4+ hours.
  • Sound Insulation: Porous nature offers good sound absorption for privacy.
  • Durable & Strong: High compressive strength, resistant to termites, mold, mildew, and water.
  • Eco-Friendly: Uses industrial waste (fly ash), reduces energy, and lowers carbon footprint.
  • Fast Construction: Larger sizes and glue application (instead of thick mortar) speed up building.
  • Easy to Work: Can be cut, shaved, and chased for pipes/wires on-site. 
  • Applications & Usage
    • Versatile: Ideal for walls (load-bearing & non-load-bearing), floors, roofs.
    • Projects: Residential, commercial, industrial, hospitals, hotels, airports (e.g., Dubai Airport uses them for acoustics). 

AAC (Autoclaved Aerated Concrete) fly ash lightweight bricks are eco-friendly, fire-resistant, and offer superior thermal insulation, with key specs including densities around 550-650 kg/m³, compressive strengths >3.5 N/mm², excellent sound insulation, and low water absorption, making them lighter and more efficient than traditional bricks for faster, cost-effective construction.