lightweight aerated concrete blocks (also called autoclaved aerated concrete blocks) are an innovative building material that contains more than 80 percent air. Aerated concrete has a number of advantages over traditional cement block materials, including lighter weight, better insulation, and higher strength.
The lightweight blocks are made from proportioned calcareous materials (cement and lime), siliceous materials (sand, slag, fly ash) and air-entraining admixtures (aluminum powder). They are mixed, cast, gas-developed, wire-cut and autoclaved into precise dimensioned units, such as blocks or panels.
They are a low-carbon, energy-efficient alternative to concrete and other common masonry construction materials. They also have a reduced environmental impact and are more durable.
These blocks can be used for a wide range of applications, from paving to structural walls. The lightweight material has excellent thermal insulating properties, good sound insulation and is fire resistant.
Their composition is based on 60 – 65% fly ash, which helps to make them incredibly strong and durable. They are able to resist damage from heat, fire and frost.
This makes them ideal for use in high-rise RCC framed structures, where the need for structural steel can be reduced. The blocks are also insulated with foam, which can reduce the amount of heating and cooling necessary in a building.
They are produced in factories that can mix, cast and cut them into a variety of sizes and shapes. They are also able to produce large volumes, and can be easily transported by truck.