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Autoclaved aerated concrete (AAC) is a lightweight, precast, cellular concrete building material. Developed initially in the mid-1920s, it has expanded into widespread use. Developed initially in the mid-1920s, it has expanded into widespread use.
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 ...
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, [18] [19 ...
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.
The history of foam concrete dates back to the early 1920s and the production of autoclaved aerated concrete, which was used mainly as insulation. [2] A detailed study concerning the composition, physical properties and production of foamed concrete was first carried out in the 1950s and 60s.
Here is the latest list of schools in England with confirmed Raac (reinforced autoclaved aerated concrete) as of September 14, according to the Department for Education (DfE).
Sheffield City Council announced that 40,000 properties would be examined for possible RAAC. [49] On 19 October, the UK government published an updated list of 214 schools and colleges in England affected by reinforced autoclaved aerated concrete. [50] This included a number in the East of England. [51]
Pages in category "Concrete" ... Properties of concrete; 0–9. 3D concrete printing; A. Abrams cone; Abrams test; Accelerated curing; Autoclaved aerated concrete ...