08/07/2026
AAC (Autoclaved Aerated Concrete) blocks are lightweight, precast building blocks used for constructing walls in residential, commercial, and industrial buildings. They are made from a mixture of cement, lime, sand (or fly ash), water, and a small amount of aluminum powder.
The aluminum powder reacts with the other ingredients to create millions of tiny air bubbles. The blocks are then cured in an autoclave (a high-pressure steam chamber), making them strong yet lightweight.
Advantages of AAC blocks
* Lightweight: About 50–60% lighter than traditional clay bricks, reducing the load on the building.
* Good thermal insulation: Helps keep buildings cooler in summer and warmer in winter.
* Fire resistant: Can withstand fire for several hours.
* Sound insulation: The air pockets reduce noise transmission.
* Accurate dimensions: Smooth surfaces require less plaster, saving material and labor.
* Eco-friendly: Uses less raw material and can incorporate industrial by-products like fly ash.
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