EPiC database - Autoclaved aerated concrete (AAC)

This material is part of the free Environmental Performance in Construction (EPiC) Database. The EPiC Database contains embodied environmental flow coefficients for 250+ construction materials using a comprehensive hybrid life cycle inventory approach. Autoclaved Aerated Concrete, also known as AAC, is a lightweight concrete product manufactured from cement, water, aluminium powder and sand. Hydrogen gas is used to create air bubbles in the mix. AAC is generally rated at 8 MPa, with up to 80% of its volume made up of air. Its lightweight nature, which is 20% lighter than standard concrete, makes it easier to work with. AAC materials can be sanded and cut to size using standard power tools and have superior thermal properties to standard concrete. AAC comes in a variety of product types, including blocks and panels. AAC blocks are typically used for domestic wall construction and are available as a 600 mm wide and 200 mm high block in thicknesses ranging from 50 to 300 mm. Blocks can be used for loadbearing walls up to three storeys. Panels are often used for both wall and floor construction in residential and commercial applications. They are 600 mm wide, 75 mm thick and come in lengths ranging from 1800 to 4800 mm.

本素材隶属于免费的建筑施工环境性能（Environmental Performance in Construction, EPiC）数据库。EPiC数据库采用综合性混合生命周期清单方法，收录了250余种建筑材料的隐含环境流系数。蒸压加气混凝土（Autoclaved Aerated Concrete, AAC）是以水泥、水、铝粉及砂为原料制备的轻质混凝土制品，制备过程中通过氢气在混合料中生成气泡。该材料常规抗压强度为8兆帕（MPa），内部孔隙体积占比最高可达80%；其表观密度较普通混凝土低20%，施工操作性优异，可通过标准电动工具进行打磨与裁切，且热工性能优于普通混凝土。AAC拥有多种产品品类，其中砌块与板材为主要形式：AAC砌块多用于民用建筑墙体施工，常规规格为宽600毫米、高200毫米，厚度区间为50至300毫米，可用于建造最高三层的承重墙体；板材则广泛应用于住宅与商业建筑的墙体及楼面施工，其标准规格为宽600毫米、厚75毫米，长度范围为1800至4800毫米。