Autoclaved ceramic powder aerated concrete self-insulating block

Abstract

The invention discloses an autoclaved ceramic powder aerated concrete self-insulating block. The self-insulating block is prepared from the following raw materials in parts by weight: 45-66 parts of ceramic slag powder, 10-15 parts of quick lime, 6-10 parts of cement, 3-5 parts of gypsum, 2-5 parts of aluminum powder, 3-6 parts of ferrosilicon powder, 15-25 parts of waste slurry, 0.3-0.6 part of an additive and 50-120 parts of water. An ultrafine powder slurry aeration molding method is established, the bottleneck of an ultrafine powder application problem in the field of aerated concrete thatthe size of a silicon material is always considered to not be less than 180-200 meshes can be overcome by utilizing multiple additives, and the problems of fine size of ceramic slag powder, large specific surface area, high water absorption rate, dispersing difficulty, large viscosity and poor slurry pouring stability can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of load-bearing or enclosure filling structures for industrial and civil buildings, and in particular relates to an autoclaved porcelain powder aerated concrete self-insulating block. Background technique [0002] As early as 1958, my country began to study steam-cured fly ash aerated concrete. For a long time, a lot of research has been done on the preparation of air-entraining blocks from fly ash, from raw material selection, formula design, pouring stability, production technology, mechanical properties of products, water absorption, drying shrinkage, durability, carbonization performance to product quality. Modification has formed a relatively mature preparation process. Although the fly ash aerated block has gradually formed a stable preparation process, it has low strength, high brittleness, high water absorption, poor freeze-thaw resistance, low carbonization ability, poor dry-wet cycle, and easy to ...

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Problems solved by technology

However, from the perspective of the impact on material preparation, because the ceramic waste slag powder is too fine, the slurry thickens quickly and has a high viscosity, which will inevitably hinder the aluminum powder from forming pores, and it is difficult to ensure casting stability.

Traditional fly ash and quartz sand autoclaved aerated concrete generally have defects such as low strength, high thermal conductivity, and poor frost resistance. During use, it is prone to swelling, cracking, and peeling, which seriously affects the building quality and service life. problem, not to mention the application in self-insulation system and load-bearing

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