Modern architecture now looks to AAC to provide a good construction method for a clean interior space with large open spaces.
Autoclaved Aerated concrete (AAC), or otherwise known as Autoclave Cellular Concrete (ACC), is a lightweight, precast building material. AAC provides structure, insulation and fire resistance in a single material. AAC products include blocks, wall panels, floor and roof panels, and lintels.
AAC was first developed by a Swedish engineer between the years 1920 and 1932. It has since been refined into a high thermally insulating concrete-based material used for construction both internally and externally. Besides insulating capability, one of AAC's advantages in construction is its quick and easy installation since the material can be routed, sanded and cut to size on site using standard carbon tip band saws, hand saws and drills.
Even though regular cement mortar can be used, 98% of the buildings erected with AAC materials uses thin bed mortar, which comes to deployment in a thickness of 1/8 inch. This varies on national building codes and creates solid and compact building members. AAC material can be coated with a stucco compound or plaster against the elements. Siding materials such as brick or vinyl siding can also be used to cover the outside of AAC materials.
A mixture of finely ground quartz sand, lime, and binding agent (aluminum paste) which is steam cured making insulated bubbles. No direct air or water pollution in the manufacture process and product is waste free.
Autoclaved Aerated Concrete systems consist of blocks held together by mortar. But that's where the similarity to conventional mortared block construction ends. AAC uses new, technologically advanced concrete and mortar to give builders and buyers a new range of possibilities toward the use of modern construction systems.
AAC is an insulating monolithic system that does not promote mold growth or condensation in the wall.
Has 4 hour fire rating as tested with ASTM E-119 at Underwriters Laboratories (UL) and will not offgas while other building components are burning.
Achieves up to 68 STC (sound transmission class)
Has one fifth the weight of Portland Cement products which means a savings on required structural support.
Only a two coat stucco needed on exterior and one coat finish on interior.
