AUTOCLAVED AERATED CONCRETE (AAC)
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Your might ask, "Why is someone touting a specific building material to a Modernist group?"
We go back to Bernard Maybeck's Berkeley "Sack House," which was a novel construct using a material called "Bubblestone." It still stands today on Buena Vista Way.
In Europe AAC is termed Aerated Autoclaved Concete. Still AAC but the terminology follows the process: First, the bubbles, then the baking and, lastly, the product -- the newest Masonry Product.
In Japan, it is called ACC -- Autoclaved Cellular Concrete.
Who's been to the National Building Museum?
Last year's "It caused a stir" Exhibition, "Masonry Variations" -- and this I believe is the LiveModern link --inspired more than few of that critical audience.
One of the four inspirational designs was "autoclaved aerated concrete(AAC), the youngest masonry material represented in the exhibition. Developed in the early 20th century, AAC is much lighter than ordinary concrete block and its unique acoustic properties became the conceptual generator" for a truly remarkable bit of masonry design, no -- sculpture.
"Dubbeldam and Mion have used this unique material to create an entirely new sensory environment."
Quoting from the Exhibition literature: "Architecture is always streched in two directions. It is pulled toward the its past...; but it is also pulled by technology, societal and cultural change, and human ingenuity and desire into the great unknown -- the future.
"'Architecture,' as Mies van der Rohe has observed, may be the 'will of an epoch translated into space,' but it is also the will of an epoch translated into material."