D E S I G N I N G W I T H A R T I S T R Y A N D I N N O V A T I O N
AAC Technology
An Introduction to Autoclaved Aerated Concrete
Autoclaved Aerated Concrete (AAC) is ultra lightweight concrete with a unique cellular structure that provides superior energy efficiency, fire resistance and acoustical properties. AAC was developed by architect Dr. Johan Eriksson in 1923 at the Royal Technical Institute in Stockholm, Sweden. In 1945, Josef Hebel invented a method to produce reinforced AAC, by incorporating steel into the production process.
Manufacturing Process of AAC
The HEBEL AAC plant located in Adel, Georgia, is currently the largest industrial autoclave plant in North America. They have an annual production capacity of 250,000 cubic meters of AAC. The manufacturing process produces no polluting waste, and uses natural raw materials. The basic ingredients of AAC are Portland cement, lime, water, sand, and aluminum paste. All ingredients are found in adequate supply throughout the world.
To manufacture AAC, the sand is first ground in a ball mill to a powder-like consistency and mixed to form a thin mixture of liquid, or slurry. The slurry is then poured into molds where a chemical reaction occurs, forming countless individually contained air bubbles. This reaction causes the slurry to rise in the mold, much like a cake rises in an oven. After curing for 45 minutes, the product is then cut into specified sizes by wires, similar to piano wires. The units then are steam cured under intense pressure in autoclaves for 10 to 12 hours, which transforms the material into a hard calcium silicate. This technology allows them to manufacture a natural mineral that can be found in limestone deposits called Tobermorite.
Building with HEBEL
HEBEL AAC products can be used in a wide range of building needs:
Walls, Floors, Roofs, Shaft walls, Site walls, DOT Sound walls and Mining applications, to name a few.
The superior fire rating, thermal efficiency and acoustic insulation of AAC make it an excellent product for building schools, hotels, dormitories, commercial structures, industrial facilities and homes.
Walls
HEBEL AAC wall panels enable fast construction- up to 25% faster than alternative building materials. The advantages of AAC walls extends throughout the operational life of the structure. HEBEL is the smart way to turn time-savings on the construction site into value-added operating benefits that continue paying dividends for years to come. Structures built with HEBEL AAC blocks and panels are noticeably quieter, and more energy efficient than any building product alone. HEBEL AAC wall panels and blocks are used for interior rooms, corridors, as well as exterior, load bearing walls.
Floors and Roof Panels
HEBEL AAC floor and roof panels are reinforced, elements custom-designed in our factory according to predefined layout plans. More than any other part of a building, the roof is the section most exposed to extreme temperatures, both hot and cold. With its unique cellular structure, HEBEL AAC offers the extreme thermal insulation properties which slow the transfer of heat and cold significantly, and allow your floor and roof finish to be applied directly to HEBEL AAC panels. Our products also are very lightweight compared to other building materials, a factor that allows large floor and roof areas to be built quickly and easily.
Shaft Walls
HEBEL AAC is non-combustible and mold resistant. The highest fire protection with four hour rating at 4" thick. The advantage of building shaft walls with AAC includes; no need for dry storage, reduce the number of inspections-with one step installation, and of course the resistance to mold.
Site Walls
HEBEL AAC panels are used for privacy walls within development communities. These site walls are used with concrete or steel columns and are the quickest, most economical way to construct site walls.
An Introduction to Autoclaved Aerated Concrete
Autoclaved Aerated Concrete (AAC) is ultra lightweight concrete with a unique cellular structure that provides superior energy efficiency, fire resistance and acoustical properties. AAC was developed by architect Dr. Johan Eriksson in 1923 at the Royal Technical Institute in Stockholm, Sweden. In 1945, Josef Hebel invented a method to produce reinforced AAC, by incorporating steel into the production process.
Manufacturing Process of AAC
The HEBEL AAC plant located in Adel, Georgia, is currently the largest industrial autoclave plant in North America. They have an annual production capacity of 250,000 cubic meters of AAC. The manufacturing process produces no polluting waste, and uses natural raw materials. The basic ingredients of AAC are Portland cement, lime, water, sand, and aluminum paste. All ingredients are found in adequate supply throughout the world.
To manufacture AAC, the sand is first ground in a ball mill to a powder-like consistency and mixed to form a thin mixture of liquid, or slurry. The slurry is then poured into molds where a chemical reaction occurs, forming countless individually contained air bubbles. This reaction causes the slurry to rise in the mold, much like a cake rises in an oven. After curing for 45 minutes, the product is then cut into specified sizes by wires, similar to piano wires. The units then are steam cured under intense pressure in autoclaves for 10 to 12 hours, which transforms the material into a hard calcium silicate. This technology allows them to manufacture a natural mineral that can be found in limestone deposits called Tobermorite.
Building with HEBEL
HEBEL AAC products can be used in a wide range of building needs:
Walls, Floors, Roofs, Shaft walls, Site walls, DOT Sound walls and Mining applications, to name a few.
The superior fire rating, thermal efficiency and acoustic insulation of AAC make it an excellent product for building schools, hotels, dormitories, commercial structures, industrial facilities and homes.
Walls
HEBEL AAC wall panels enable fast construction- up to 25% faster than alternative building materials. The advantages of AAC walls extends throughout the operational life of the structure. HEBEL is the smart way to turn time-savings on the construction site into value-added operating benefits that continue paying dividends for years to come. Structures built with HEBEL AAC blocks and panels are noticeably quieter, and more energy efficient than any building product alone. HEBEL AAC wall panels and blocks are used for interior rooms, corridors, as well as exterior, load bearing walls.
Floors and Roof Panels
HEBEL AAC floor and roof panels are reinforced, elements custom-designed in our factory according to predefined layout plans. More than any other part of a building, the roof is the section most exposed to extreme temperatures, both hot and cold. With its unique cellular structure, HEBEL AAC offers the extreme thermal insulation properties which slow the transfer of heat and cold significantly, and allow your floor and roof finish to be applied directly to HEBEL AAC panels. Our products also are very lightweight compared to other building materials, a factor that allows large floor and roof areas to be built quickly and easily.
Shaft Walls
HEBEL AAC is non-combustible and mold resistant. The highest fire protection with four hour rating at 4" thick. The advantage of building shaft walls with AAC includes; no need for dry storage, reduce the number of inspections-with one step installation, and of course the resistance to mold.
Site Walls
HEBEL AAC panels are used for privacy walls within development communities. These site walls are used with concrete or steel columns and are the quickest, most economical way to construct site walls.
