Recycled fine aggregate aerated building block with electromagnetic wave absorption performance and preparation method thereof

Abstract

The invention relates to a recycled fine aggregate aerated building block with electromagnetic wave absorption performance. The recycled fine aggregate aerated building block comprises the following raw materials in parts by weight: 100-250 parts of recycled concrete aggregate fine powder, 50-100 parts of sand, 70-100 parts of cement, 30-50 parts of lime, 0.5-0.8 part of graphite, 0.5-1.0 part ofcarbon black, 20-30 parts of lightweight aggregate, 0.8-1.6 parts of polyurethane hot melt slag, 0.01 part of industrial carbon nanotube, 20-30 parts of steel slag powder, 0.4-0.5 part of aluminum powder, 0.7-1 part of carbon fiber, 3-6 parts of dispersant and 300-400 parts of water. The aerated building block has the advantages of low carbon, energy conservation, environmental protection, light weight, heat preservation and electromagnetic wave absorption performance; simple preparation method and convenience in construction are achieved; and the proportion of the components can be adjusted according to the wave absorption requirement, different reflectivity can be obtained, and various building external maintenance walls with radiation protection and heat preservation and insulation functions can be met.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a regenerated fine aggregate aerated block with electromagnetic wave-absorbing performance. Background technique [0002] The currently used aerated concrete blocks, ordinary concrete blocks and other types of blocks consume a lot of resources and energy, and generally only have thermal insulation properties, and have special requirements for electromagnetic radiation and protection In terms of construction, ordinary blocks cannot meet the requirements of use functions. [0003] On the other hand, in the construction industry, a large amount of construction waste is produced every year, such as waste mortar, waste concrete, etc. The stockpiling of these wastes not only occupies a large amount of land, but also causes serious environmental pollution. Steel slag is the waste slag produced in the metallurgical industry, and its production rate is 8% to 15% of...

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Problems solved by technology

[0002] The currently used aerated concrete blocks, ordinary concrete blocks and other types of blocks consume a lot of resources and energy, and generally only have thermal insulation properties, and have special requirements for electromagnetic radiation and protection In terms of construction, ordinary blocks cannot meet the requirements of the use function

[0003] On the other hand, in the construction industry, a large amount of construction waste is produced every year, such as waste mortar, waste concrete, etc. The stockpiling of these wastes not only takes up a lot of land, but also causes serious environmental pollution

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