Manufacturing method for autoclaved aerated concrete block

Abstract

The invention relates to the technical field of building materials, in particular to a manufacturing method for an autoclaved aerated concrete block. The manufacturing method comprises the following steps: S1, selecting mint, climbing groundsel herb, tea leaves and dry ginger, and grinding and smashing the materials to obtain an A product; S2, mixing sand, gypsum, ceramic waste residue and coal ash with water, and grinding the mixture into mixed slurry to obtain a B product; S3, mixing lime, cement, a foaming agent, a water-retaining agent, a foam stabilizer, fiber and the A product with the Bproduct, and stirring to form a C product; S4, mixing a formaldehyde purification adsorbent, tea leaves and fiber to obtain a D product; S5, pouring a first layer of the C product at the bottom of amold, then paving the D product on a first layer of the C product, then pouring a second layer of the C product on the D product to obtain a blank, and warming and precuring the blank; and S6, demolding the precured blank, and carrying out cutting, autoclaved curing and cooling to obtain the finished product. The obtained autoclaved aerated concrete block is relatively high in adsorption capacityfor toxic and hazardous substances such as formaldehyde, benzene and ammonia.

Description

technical field [0001] The invention relates to the technical field of building materials, more specifically, it relates to a method for making an autoclaved aerated concrete block. Background technique [0002] Aerated concrete block is a new type of wall building material. It is unique in that it is a very light thermal insulation building wall material. Aerated concrete blocks are mostly used in construction projects in the form of prefabricated products. They can be used to build load-bearing walls of houses with three floors or less, and can also be used as non-load-bearing fillings for industrial plants, multi-storey, and high-rise frame structures. Wall material used. Compared with the traditional clay sintered brick material, although the strength of the aerated concrete block is lower, its material cost is lower, and the weight of the aerated concrete block is also smaller, and the construction of the wall can be greatly reduced. The self-weight of the object, and...

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Problems solved by technology

[0003] However, most aerated concrete blocks have the following problems in the process of production and use: First, due to the addition of various industrial ceramic waste residues and lime and other raw materials in the preparation process of aerated concrete blocks, the blocks emit a pungent smell. It has a certain amount of radioactivity, which will cause harm to the body of block production workers and installation workers. At the same time, it will still emit a pungent smell after being placed in the wall, resulting in poor indoor air quality; second, aerated concrete After the block is put into the wall, it has no adsorption effect on the formaldehyde, benzene, ammonia and other toxic and harmful substances produced between the cement poured on its surface and the wall paint painted on the cement surface, resulting in the loss of these harmful substances. It cannot be dispersed indoors for a long time, which seriously affects the health of residents; third, be

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