1 The difference and the same between AAC board and AAC block
1) Different specifications and sizes: According to the "Wall Material Terminology" standard, wall panels and blocks are firstly different in appearance size. The block size is limited, while the board size is much larger.
2) The parts used are different: AAC blocks are mainly used for load-bearing or non-load-bearing walls, and low-density aerated products can also be used for building insulation; while AAC panels can be used as walls or insulation, as well as Floor slabs, roof slabs, etc.
3) The constituent materials are not the same: AAC blocks are only composed of autoclaved aerated concrete as a single material, while AAC panels must be reinforced in addition to autoclaved aerated concrete as the body material, so AAC panels are building components.
4) The production technology, equipment and process control are not the same: it seems that AAC board and AAC block are only different from the steel bar processing section in these three aspects, but their connotation or essence are different. For example: the precision requirements of the bottom plate are different; the special equipment is different; the process layout is different; the quality requirements of the raw materials are different; even the slurry properties are different.
2 Differences in technical performance requirements between GB 15762-2008 and GB 11968-2006
Due to the above similarities and differences, GB 15762-2008 "Autoclaved Aerated Concrete Slabs" and GB 11968-2006 "Autoclaved Aerated Concrete Blocks" also have the same and different technical performance requirements, which are mainly reflected in:
1) The quality requirements for the production of basic raw materials (including cement, quicklime, fly ash, sand, aluminum powder, gypsum, etc.) are the same. The properties of the bulk material (the gas entrainment itself) are basically the same, but there are differences (more on this later).
2) The AAC board has increased the requirements for steel bars and their anti-corrosion, and the thickness requirements for the protective layer of steel bars.
3) AAC panels are members, so requirements should be made for the structural performance (loads and deflections) of the members.
