Autoclaved aerated concrete block (autoclaved aerated concrete block production)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.8. The product "autoclaved aerated concrete block" represents hardened blocks consisting mainly of calcium silicate hydrate and air voids. The raw materials for autoclaved aerated concrete blocks are silica sand and binding agents (milled quicklime, cement and anhydrite) which are mixed with water to a suspension. Aluminium powder is added and the mixture is poured into a mould. The aluminium powder is reacting with the alcaline and siliceous additives and forms, by hydrogen release, pores with a diameter between 2 and 3mm. Hardening is assumed to be by air-drying. The main use of lightweight and autoclaved aerated concrete blocks are precision blocks, precision building plates, roof and floor panels, reinforced wall partition blocks, assembly beam, head and pillar units. The cut-off classification is allocatable product. The activity type is ordinary transforming activity. The reference product amount is 1.