gazobetonu

Gazobetonu, also known as gas concrete or aerated concrete, is a lightweight cementitious material containing air voids that significantly reduce density and improve insulation. It is produced in cellular form and is commonly used in blocks or panels for walls, floors, and partitions.

Production and composition

Gazobetonu is typically made from cement or lime, silica sand, water, and a foaming or gas-forming agent. Aluminum powder is often used as the foaming agent in autoclaved aerated concrete (AAC), which creates tiny air bubbles throughout the mix. There are autoclaved and non-autoclaved variants. AAC blocks or panels are cast in molds and then cured, in the autoclaving process at elevated temperature and pressure to achieve higher strength. Non-autoclaved versions rely on foam and curing to set. The resulting material has a porous structure that lowers density and thermal conductivity.

Physical properties

Gazobetonu is lightweight, with densities typically in the range of roughly 350 to 800 kg/m3, depending on grade and product form. Compressive strength varies widely, commonly from about 2 to 8 MPa. Thermal conductivity is low, contributing to good insulation (roughly 0.09 to 0.19 W/m·K). The material offers good fire resistance and sound insulation. It is relatively easy to cut and shape with standard tools, though moisture sensitivity and surface finish requirements should be considered. It is often protected from moisture exposure with plaster or renders.

Applications and considerations

Gazobetonu is widely used for external and internal walls, partitions, and floor elements in residential and commercial construction, especially where light weight and energy efficiency are priorities. Its advantages include reduced structural load and improved thermal performance, while limitations include moisture sensitivity, lower ultimate strength compared with traditional concrete, and the need for proper detailing to handle joints, moisture ingress, and structural connections.

Standards and regional use

The technology is well established in Europe and other regions, with AAC versions known under various regional names, including gazbetonu in Turkish-speaking contexts. Typical manufacturers supply blocks, panels, and prepared elements that integrate with conventional construction systems.