Masonry - Densities
Aggregate blocks come in two types.
Dense aggregate blocks have a density in the range 1800 – 2100 kg/m3, while lightweight aggregate blocks have with a density in the range 650 – 1500 kg/m3.
Aircrete blocks have a density in the range 400 – 900 kg/m3.
Concrete bricks have a density in the range 1900 – 2100 kg/m3 for Commons, Facing and Engineering Quality and 1400 kg/m3 for lightweight bricks.
For further information see the Concrete Block Association or the Autoclaved Aerated Concrete Products Association