but also in floors and walls, between the 1950s and 1990s. It is a cheaper alternative to standard concrete, is quicker to produce and easier to install. It is aerated, or "bubbly", like an Aero ...

Hinchingbrooke Hospital in Huntingdon is one of four in the East of England severely affected by reinforced autoclaved aerated concrete - or Raac - used in the construction of some of the walls ...

Raac, or reinforced autoclaved aerated concrete, is weaker than conventional concrete and ... Raac was used in roof, floor, ...