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What is AAC

Composition of AAC

Autoclaved Aerated Concrete (AAC), also known as Autoclaved Cellular Concrete (ACC) or Autoclaved Lightweight Concrete (ALC), was invented in the mid-1920s by the Swedish architect and inventor Johan Axel Eriksson. It is a lightweight, precast building material that simultaneously provides structure, insulation, and fire and mold resistance. AAC products include Blocks, and Wall panels.

It has been refined into a highly thermally insulating concrete-based material used for both internal and external construction. Besides AAC’s insulating capability, one of its advantages in construction is its quick and easy installation, for the material can be routed, sanded, and cut to size on site using standard carbon steel band-saws, hand saws, and drills.


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Advantages of AAC

AAC Blocks reduce build time, labour, materials and hence save money

  • Light mass: 300-800 kg/ m3
  • Good thermal insulation property: 0.1-0.20W/(m.k)
  • Heat-resistant & Fire-proof
  • Good sound insulation
  • Earth quake resistant
  • Automated Manufacturing
  • Mechanized construction ability
  • Workability allows accurate cutting, which minimizes the generation of solid waste during use
  • Light weight also saves cost & energy in transportation
  • Light weight saves labour
  • Resource efficient manufacturing with low environmental impact in all phases of it’s life-cycle

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Applications of AAC

AAC is particularly economical in large scale projects

AAC product has been widely used in industrial and civil construction.

AAC product can be divided into AAC block and AAC plate.

  • Autoclaved aerated concrete is used in the construction of dwellings and businesses.
  • Autoclaved aerated concrete is used preferentially in external walls because of its outstanding insulation properties.
  • Autoclaved aerated concrete is used in multi-storey construction and it is quite viable for even 5-storey constructions.
  • Entire residential areas are built using autoclaved aerated concrete.
  • A very big reason for this is the ease of application, even for the non-professional, thus enabling a high level of personal contribution and resulting in a reduction of building costs.

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