Dominating headlines in recent weeks has been the closure of
school buildings in England following the discovery of problems
with Reinforced Autoclave Aerated Concrete (RAAC). In certain
conditions, the material can become hazardous, and elements of the
buildings concerned are at risk of collapse.
Dominating headlines in recent weeks has been the closure of
school buildings in England following the discovery of problems
with Reinforced Autoclaved Aerated Concrete (RAAC). In certain
conditions, the material can become hazardous, and elements of the
buildings concerned are at risk of collapse.
RAAC was frequently used in roofs, walls and floors of buildings
in the latter half of the last century as a lightweight – and
cheaper – alternative to traditionally reinforced concrete.
It now appears that it can be prone to deterioration and failure,
particularly when affected by moisture. The speed at which steps
have been taken by ministers to partially or fully close
