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 ...

DURING A EUROPEAN building boom that began in the 1960s, a novel form of construction material began to be used. Reinforced autoclaved aerated concrete, known as RAAC, is pre-cast in a factory ...

Raac is less durable than concrete, and is prone to collapse when wet, as moisture soaks into its aerated holes. It has a life expectancy of little more than 30 years.

Those schools were identified as likely to contain the aerated concrete after returning a questionnaire circulated at the end of last year. The spokesman said: “We are on track to complete 600 ...

It has an aerated, bubbly texture and was preferred as a cheaper alternative to standard concrete as it was faster to produce and easier to install. The air bubbles in Raac mean it is lighter and ...

It is a lightweight material that is cheaper than standard concrete and is quicker to produce. It is aerated, or "bubbly" and is less durable. It has a lifespan of around 30 years.

Hundreds of Aberdeen residents to be moved out of homes due to unsafe concrete Around 500 homes in the city's Balnagask area were identified as having reinforced autoclaved aerated concrete (RAAC ...

The Mirror also revealed the full list of NHS buildings, including seven hospitals, built with the crumbling concrete. Essex has been by far worst hit, with 65 schools in the country built with RAAC.

More than £6m will be spent on removing concrete from a shopping centre amid concerns over its safety. North East Lincolnshire Council has agreed to replace the reinforced autoclaved aerated ...