Autoclaved aerated concrete blocks Its construction characteristics are also very good. It can not only produce various specifications in the factory, but also sawing, planing, drilling, and nailing like wood. Because of its large size, its construction speed is also relatively fast, and it can be used as filling material for general buildings.

Key points for selection:

1. It is mainly used for the external infill wall and non load bearing internal partition wall of the building, and can also be combined with other materials to form a composite wall with thermal insulation function, but it is not suitable for the outermost layer.

2. Autoclave Aerated concrete block Without effective measures, it shall not be used for the following parts: building elevation below ± 0.000; Parts that have been immersed in water for a long time, often subject to alternating drying and wetting, or frequently subject to freezing and thawing cycles; Parts corroded by acid and alkali chemicals and parts where the surface temperature of products is higher than 80 ℃.

3. See the national building standard design atlas 13J104 Autoclaved Aerated Concrete Block Building Structure for details of design and construction. The corner of the outer wall and the junction of the inner and outer walls shall be built by biting, and reinforcement or mesh shall be prepared in the mortar joint about 1m high along the wall. Each side shall be 1m deep into the wall, and full-length reinforcement shall be added in the mortar joint about 1m high along the wall of the gable.

4. At the intersection of non bearing wall, infilled wall or partition wall built behind and external bearing wall, reinforcement shall be used to connect with the external wall along the wall height of 900~1000mm, and the length of each side penetrating into the wall shall not be less than 700mm.

5. The protruding parts of the autoclaved aerated concrete exterior wall, such as moldings, cornices, window sills, etc., should be flashing and dripping to prevent the water flowing into the wall from damaging the exterior wall after multiple freeze-thaw cycles.

6. At the bottom of the block wall, the top of the wall, and the door and window openings, sintered ordinary bricks or perforated bricks should be used locally, and the height should not be less than 200mm.

7. Aerated concrete blocks with different dry densities and strength grades shall not be mixed, nor shall they be mixed with other bricks and blocks.

8. Masonry mortar shall be special mortar with good bonding performance; Special plastering materials or polypropylene fiber anti crack mortar shall also be used for the plastering of aerated concrete.

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