Cellular Lightweight Concrete (CLC) is conventional
concrete, where natural aggregate (gravel) is exchanged for the
best insulation medium available, namely air, embedded in an organic
and bio-degradable foam that offeres no chemical reaction but solely
serves as wrapping material for the air. Consequently CLC behaves,
like conventional concrete, in particular concerning curing, hardening
and most important "ageing ". CLC infinitely increases
its strength by hydration (forming of crystals in cement) as long
as exposed to humidity in the atmosphere.
For structural (steel-reinforced) application, CLC is used in densities
of 1.200 to 1.400 kg/m³, which, due to the billion of microsized
and uniform air bubbles offer 500 % (!) more thermal insulation
and a substantialy higher fire-rating than conventional concrete.
If a wall of conventional concrete should offer the same thermal
insulation as CLC, the wall produced would have to measure 5 times
thicker and therefore also use 10 times more material (sand, gravel,
cement) to produce. In hot environment the essential air-conditioning
requires 500% (!) more primary energy to cool down than when heating,
a fact, which is not even known to many experts.