The lightweight concrete was used in roofs, floors and walls between the 1960s and 1980s. The material, which has bubbles inside like "a chocolate Aero bar", has a limited lifespan and all five ...
The lightweight concrete was widely used from the 1960s to the 1990s The lightweight concrete was used in roofs, floors and walls between the 1950s and 1990s as a cheaper alternative to the ...