Wednesday, 26 February 2014

AAC block

AAC Blocks 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 AAC blocks , AAC U Blocks AAC wall panels , AAC floor and roof panels , and AAC lintels .
AAC Blocks ( Autoclaved Aerated Concrete - " AAC ") a unique and excellent type of building materials due to its
super heat, fire and sound resistance, AAC blocks is lightweight and offers ultimate workability, flexibility and
durability. Its main ingredients include sand, water, quicklime, cement and gypsum. The chemical reaction due to
the aluminum paste provides AAC its distinct porous structure, lightness, and insulation properties, completely
different compared to other lightweight concrete materials.
Aerated Concrete Blocks - AAC is produced from the common materials lime,
sand, cement and water, and a small amount of rising agent. After mixing and
molding, it is then autoclaved under heat and pressure to create its unique
properties. AAC has excellent thermal insulation and acoustic absorption
properties. AAC is fire and pest resistant, and is economically and
environmentally superior to the more traditional structural building materials
such as concrete , wood, brick and stone.
AAC BLOCKS begins as a slurry mix of lime, sand, cement and water, and a small amount of rising agent.
For reinforced panels , a welded steel cage element is placed into the molds prior to pouring in the slurry.
Once the slurry is poured in, the mixture begins to foam and rise up completely around the reinforcing cage.
Once the rising process is complete the cage and the AAC are completely integrated and ready to be placed into
the autoclave for the curing process.

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