Preparation method of non-autoclaved aerated concrete as well as composite thermal insulation assembly wallboard and building block

Abstract

The invention relates to a preparation method of non-autoclaved aerated concrete, which comprises the following steps: (1) weighing the following components in parts by weight: 200-500 parts of cement, 300-500 parts of a filling material, 10-15 parts of a curing agent, 0.5-1 part of a foaming activator, 0.5-1 part of aluminum powder and 100-300 parts of water; (2) mixing other components except the aluminum powder in the step (1), and stirring to prepare concrete slurry; (3) adding aluminum powder into the concrete slurry to be stirred, and then injecting the mixture into a forming mold box tobe subjected to static stopping gas formation; and (4) reacting the aluminum powder with a foaming activator to generate gas, and expanding the slurry until the slurry is generated to a required position of the mold box to form a blank body. A composite thermal insulation assembly wallboard and a building block are mainly used for a filling maintenance part of a building external wall, belong toa building energy saving and structure integration technology product, and have a thermal insulation function, and the external wall does not need to be subjected to additional thermal insulation measures.

Description

technical field [0001] The invention relates to a method for preparing autoclaved-free aerated concrete and a composite heat-preservation assembled wallboard and block. Background technique [0002] Autoclaved aerated concrete and its products have been processed in my country for more than 20 years, and the technology has not been improved. The equipment investment is large, and the processing technology is cumbersome, especially for solid waste materials. Fly ash or silica sand require high silicon content, and materials that cannot reach the fineness must be crushed and ball milled, especially must be used The autoclave is autoclaved at high temperature and high pressure to promote the reaction of silicon and calcium to achieve strength. Therefore, there are many production links and the cost is relatively high. Contents of the invention [0003] In order to overcome the defects of the prior art, the present invention provides a method for preparing autoclaved aerated...

AI Technical Summary

Problems solved by technology

The equipment investment is large, and the processing technology is cumbersome, especially for solid waste materials. Fly ash or silica sand require high silicon content, and materials that cannot reach the fineness must be crushed and ball milled, especially must be used The autoclave is autoclaved at high temperature and high pressure to promote the reaction of silicon and calcium to achieve strength

Therefore, there are many production links and the cost is relatively high

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