Autoclaved aerated concrete blocks It shall not be directly built on the floor or ground. With regard to the root of the wall that is often subject to the effect of dry and wet replacement, such as the toilet, terrace, external balcony, and the contact part between the air conditioner support plate and the masonry on the external wall, C20 plain concrete wall pads with the same width as the wall thickness and a height of no less than 0.2m should be poured; For other walls, autoclaved lime sand bricks should be used to build a wall mat with a height of not less than 0.2m at the root.

autoclave Aerated concrete block It shall not be used in the following parts:

1. The part of the building below ± 0.000 (the interior infill wall of the basement is outside);

2. Parts that have been immersed in water for a long time or are often replaced with dry and wet parts;

3. Environments subject to chemical attack, such as strong acid, strong alkali or high concentration of carbon dioxide;

4. The masonry surface is often in a high temperature environment above 80 ℃;

5. Roof parapet.

Others, when Sand aerated block When used as the main data for construction, the radionuclide limit shall conform to the provisions of GB6566-2010 Radionuclide Limit for Construction Data. When the specific activity of natural radionuclides Ra-226, Th-232 and K-40 in the main data of construction meet the requirements of IRa ≤ 1.0 and Ir ≤ 1.0 at the same time, their production, marketing and application scope are not restricted. The production, marketing and application scope of the main construction data with a void ratio of more than 25% and the specific activity of the natural radionuclides Ra-226, Th-232 and K-40 meet the requirements of IRa ≤ 1.0 and Ir ≤ 1.3.

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