The AAC blocks (Autoclaved Aerated Concrete) material was developed in 1924 in Sweden. It has become one of the most used building materials in Europe and is rapidly growing in many other countries worldwide. Aerated block machine/arc machinery/automatic block machine is available in the whole world.
Autoclaved Aerated Concrete (AAC Blocks) is a lightweight, load-bearing, high-insulating, durable building product produced in a wide range of sizes and strengths.
In the manufacture of clay bricks, the topsoil is depleted and natural resources are eroded, resulting in ecological imbalances. But by utilizing fly ash which is the waste material generated by thermal power stations, we will be saving the natural resources on the one hand and putting the industrial waste into productive use.
This makes #AACBlocks one of the best examples of a truly “green product”, in every sense of the term. Sand is another alternative to fly ash for manufacturing AAC Blocks. However, sand cannot be recycled like fly ash and therefore, manufacturing #AACBlocks using sand cannot be considered a green process and the resultant product a green product.
AAC is also known as Autoclaved Aerated concrete. It is lightweight concrete. AAC Blocks have been widely using across the world. AAC Blocks are made by mixing Portland cement, lime, fly ash, water, and aluminum powder; the final mixture is poured into moulds. The reaction between aluminum and lime causes microscopic hydrogen bubbles to form lower-density concrete by expanding it. After evaporation of the hydrogen and initial setting, aerated concrete is cut into required sizes and cured by steam-curing in a pressurized chamber (an autoclave) or low pressurized steam chambers. The result is a non-toxic, high strength, lightweight, airtight material that can be used for all walling applications. AAC Blocks are green building material that generates no pollutants or hazardous waste during the manufacturing process.