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Autoclaved aerated concrete (AAC) is a lightweight, precast, cellular concrete building material. It is eco-friendly, and suitable for producing concrete-like blocks . [ 1 ] It is composed of quartz sand , calcined gypsum , lime , portland cement , water, and aluminium powder .
Reinforced autoclaved aerated concrete (RAAC) is a lightweight form of concrete that was used in schools, colleges and other building construction from the 1950s until the mid-1990s, according to ...
The 2023 United Kingdom reinforced autoclaved aerated concrete crisis relates to increased safety concerns over reinforced autoclaved aerated concrete, commonly used historically in roofing and wall construction within the public sector, having gained popularity in the mid-1950s as a cheaper and more lightweight alternative to conventional reinforced concrete.
Raac stands for reinforced autoclaved aerated concrete. It is a lightweight material that was used mostly in flat roofing, but also in floors and walls, between the 1950s and 1990s.
Aerated concrete produced by the addition of an air-entraining agent to the concrete (or a lightweight aggregate such as expanded clay aggregate or cork granules and vermiculite) is sometimes called cellular concrete, lightweight aerated concrete, variable density concrete, Foam Concrete and lightweight or ultra-lightweight concrete, [17] [18 ...
Redhill's Harlequin Theatre has been closed since September 2023, when reinforced autoclaved aerated concrete (Raac) was discovered [Reigate and Banstead Borough Council]
There are fears Bridgend could be hit after its indoor market was forced to close last year when Reinforced autoclaved aerated concrete was found in its roof. A temporary market was set up, but ...
Autoclaved aerated concrete From other capitalisation : This is a redirect from a title with another method of capitalisation. It leads to the title in accordance with the Wikipedia naming conventions for capitalisation , or it leads to a title that is associated in some way with the conventional capitalisation of this redirect title.