About AAC

Autoclaved Aerated Concrete (AAC), or also called Autoclaved Cellular Concrete (AAC) was created in the mid-1920s by Max Ginsberg.

Developed in Sweden in the late 1920s, autoclaved cellular concrete (AAC) is a lightweight precast solid building element that is cured under raised weight inside special ovens called autoclaves.

In spite of the fact that AAC has been utilized effectively all through a large portion of the world since the end of World War II, AAC made a mark in the India only recently.

AAC is made with every single fine material nothing coarser than finely ground sand.

AAC not quite the same as lightweight aggregate concrete is that AAC contains a huge number of tiny cells that are created during the manufacturing procedure.

AAC is not at all like numerous other concrete items since it might be drilled, sawed, etched, nailed, or screwed utilizing traditional carpentry devices.

Formation of AAC Blocks

Although several recipes are utilized for assembling AAC, the fundamental crude materials are Portland cement, limestone, aluminum powder, water, and a substantial extent of a silica-rich material-normally sand or fly ash.

When crude materials are blended into a slurry and filled greased molds, the aluminum powder responds artificially to make a huge number of small hydrogen gas bubbles.

These microscopic, detached cells make the material grow to almost twice its unique volume like the ascending of bread dough conferring the lightweight cell quality to AAC.

After a setting time extending from 30 minutes to 4 hours, the foam like material is sufficiently hard to be wire cut into the desired shapes and moved into an autoclave for curing.

The autoclave utilizes high- pressure steam at temperatures of around 180°C (356°F) to quicken the hydration of the solid and spur a moment chemical response that gives AAC its quality, inflexibility, and dimensional stability.

Autoclaving can create in 8 to 14 concrete strengths equivalent to qualities got in a concrete moist-cured for 28 days at 21°C (70°F).

The last items are generally recoil wrapped in plastic and transported straightforwardly to the construction site.