2023年9月19日 · Reinforced autoclaved aerated concrete (RAAC) is a lightweight material that was used mostly in flat roofing, but also in floors and walls, between the 1950s and 1990s.

Reinforced Autoclaved Aerated Concrete, or RAAC, is not your everyday building block. Introduced between the 1950s and mid-1990s, it was the go-to for builders who wanted something light yet effective for building insulation.

2023年1月29日 · RAAC is a building material that is made from a combination of cement, lime, water, and an aeration agent. The mixture is poured into moulds and then subjected to high pressure and heat, known as autoclaving, to create a lightweight, strong, and porous material.

2024年4月26日 · RAAC is a reinforced form of lightweight concrete used to form panels or planks. It has no aggregate unlike common concrete. These were mainly used in flat roofs but also in some floor and wall panel construction in the UK from the mid-1950s to the mid-1990s.

2023年9月18日 · In August 2023, the Department for Education (DfE) published an RAAC identification guide, and guidance for responsible bodies and education settings with confirmed RAAC in their buildings earlier this month.

2023年10月12日 · RAAC is a type of concrete that was used extensively within the construction of walls, floors and roofs between the 1950s and 1990s. RAAC became popular as a lightweight and lower cost alternative to concrete, and also offers good fire-resistant properties.

The Institution of Structural Engineers information on Reinforced Autoclaved Aerated Concrete (RAAC) provides authoritative guidance on RAAC. RAAC is a lightweight form of precast concrete,...

Information on Reinforced Autoclaved Aerated Concrete (RAAC). RAAC was a building material used in some buildings to form roof planks, wall panels, and sometimes floor planks, between the mid-1950s and mid-1990s. We have established key action to support building owners/ managers.

2023年9月11日 · Reinforced autoclaved aerated concrete - otherwise known as RAAC - is a lightweight building material which was used from the 1950s up to the mid-1990s in the UK and across the globe.

2023年9月19日 · Reinforced autoclaved aerated concrete (RAAC) is an aerated lightweight form of concrete with no coarse aggregate. The material properties and structural behaviour therefore differ significantly from ‘traditional’ reinforced concrete.