the mix of a concrete, such offered in aircured CLC. • Fire Protection: The airembedded in the CLC is also instrumental for the high firerating. In 1200 kg/m³ density a 1314 cm thick wall has a fire endurance of 5 hours. The same delay occurs with a 400 kg/m³ layer of CLC in only 10 cm thickness. CLC is otherwise noncombustible.