How to choose concrete block？

Concrete blocks are commonly used in many projects and have strong overall performance, but in order to ensure the final effect, we need to pay attention to some details when selecting, then how should we choose a good concrete block？

Concrete block选用：

1. Ceramic aerated concrete block is mainly used for the external filling wall and non-load-bearing internal partition wall of the building, and can also be combined with other materials to become a composite wall with thermal insulation function, but it is not suitable for the outer layer。At the intersection of the non-load-bearing wall, the filling wall or the partition wall and the external load-bearing wall, the steel bar should be pulled together with the external wall at the height of 900 ~ 1000mm along the wall, and the length of each side going deep into the wall shall not be less than 700mm。

2, concrete blocks without effective measures, shall not be used in the following parts: building elevation ±0.Less than 000;Long-term immersion, often subject to dry and wet alternately or often subject to freeze-thaw cycle parts, parts eroded by acid and alkali chemicals and parts of the product surface temperature above 80 ° C。

3. For details of design and construction, see National Building Standard Design Atlas 03J104 Autoclaved Aerated Concrete Block Building Structure.。The corner of the outer wall and the intersection of the inner and outer walls should be bitten, and steel bars or mesh should be prepared in the ash joint of about 1m along the wall height, each side should be deep in the wall of 1m, and the gable should be added in the ash joint of about 1m along the wall height。

4. The protruding parts of the autoclaved aerated concrete exterior wall, such as molding, eaves, windowsills, etc., should be flooded and dripping to avoid the water flowing into the wall after multiple freeze-thaw cycles, damaging the exterior wall。

5. At the bottom of the block wall, the top of the wall, and the opening of the door and window, sintered ordinary bricks or porous bricks should be used locally, and the height should not be less than 200mm。Concrete blocks of different dry density and strength grades should not be mixed or mixed with other bricks and blocks。