RAAC was once seen as ideal for shaping into lighter, pre-formed concrete components, but over time the material has weakened, sagged and exacerbated problems in buildings.
During the post-war building boom of the 1950s, 60s and 70s, reinforced aerated autoclaved concrete was something of a wonder material.
RAAC was seen as ideal for shaping into lighter, pre-formed concrete components used in the modern lego-like construction of many public buildings of the time.
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