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Autoclaved aerated concrete (AAC) is a lightweight, precast, cellular concrete building material. It is eco-friendly, and suitable for producing concrete-like blocks . [ 1 ] It is composed of quartz sand , gypsum , lime , portland cement , water, and aluminium powder .
The Xella Group develops, produces, and sells building materials and insulating materials – based on mineral resources. [1] With its Ytong, Silka and Hebel brands, Xella is one of the world's largest manufacturers of autoclaved aerated concrete and calcium silicate blocks.
Reinforced autoclaved aerated concrete (RAAC) is a lightweight form of concrete that was used in schools, colleges and other building construction from the 1950s until the mid-1990s, according to ...
Oldcastle Materials Inc. is a supplier of asphalt, concrete, and other building materials, and also offers construction and paving services. The Atlanta-based company is a subsidiary of CRH plc, a publicly traded international group of diversified building materials businesses, [2] [3] and has approximately 18,000 employees at 1,200 locations, as of March 2018.
The history of foam concrete dates back to the early 1920s and the production of autoclaved aerated concrete, which was used mainly as insulation. [2] A detailed study concerning the composition, physical properties and production of foamed concrete was first carried out in the 1950s and 60s.
A pallet of "8-inch" concrete blocks An interior wall of painted concrete blocks Concrete masonry blocks A building constructed with concrete masonry blocks. A concrete block, also known as a cinder block in North American English, breeze block in British English, concrete masonry unit (CMU), or by various other terms, is a standard-size rectangular block used in building construction.