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Autoclaved aerated concrete block and preparation method thereof

A technology of concrete blocks and autoclaved air filling, which is applied in the field of building materials, can solve the problems of reducing the adsorption effect and reducing the adsorption capacity of harmful substances, and achieves good effects, enhanced air purification effects, and strong capabilities

Active Publication Date: 2022-02-18
青岛天利兴达新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the above-mentioned related technologies, the inventor thinks that the existing autoclaved aerated concrete block is mixed with activated carbon to absorb the peculiar smell in the concrete block, and to absorb toxic substances in the air, but activated carbon is not compatible with cement, quicklime, pulverized coal, etc. After the ash and other raw materials are mixed and cast, the slurry formed by fly ash, quicklime and water will be wrapped on the surface of the activated carbon particles. After curing, the fly ash and cement will be formed to block the pores in the activated carbon, so that the activated carbon will reduce the odor in the aerated concrete. The adsorption effect is reduced, and the adsorption capacity of autoclaved aerated concrete blocks to harmful substances is also reduced

Method used

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  • Autoclaved aerated concrete block and preparation method thereof
  • Autoclaved aerated concrete block and preparation method thereof
  • Autoclaved aerated concrete block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-4

[0041] The carbon nanotubes in Preparation Examples 1-4 are selected from Beijing Deke Daojin Technology Co., Ltd., and the model is CNT104.

preparation example 1

[0042] Preparation Example 1: (1) Put 50g of carbon nanotubes in nitric acid solution, stir at 60°C for 5h, cool to room temperature, filter under reduced pressure with a 0.22um microporous membrane, wash with deionized water until neutral , dried in vacuum at 80°C for 24h, the mass ratio of carbon nanotubes and nitric acid solution was 1:100.

[0043] (2) In parts by weight, 10g mass fraction of silver nitrate solution, 50g ethylene glycol solution and 50g acidified carbon nanotubes were ultrasonically dispersed for 30min at a power of 300W, and 60g potassium permanganate was added, Stir at 120°C for 15h, and calcined at 400°C for 12h to prepare silver-loaded manganese dioxide.

preparation example 2

[0044] Preparation Example 2: (1) Put 50g of carbon nanotubes in nitric acid solution, stir at 65°C for 4h, cool to room temperature, filter under reduced pressure with a 0.22um microporous membrane, wash with deionized water until neutral , dried in vacuum at 85°C for 22h, the mass ratio of carbon nanotubes and nitric acid solution was 1:150.

[0045] (2) In parts by weight, the carbon nanotubes after 25% silver nitrate solution, 55g ethylene glycol solution and 55g acidification were ultrasonically dispersed at a power of 250W by 15g mass fraction, and 65g potassium permanganate was added, Stir at 125°C for 13h, and calcined at 460°C for 11h to prepare silver-loaded manganese dioxide.

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Abstract

The application relates to the field of building materials, and specifically discloses an autoclaved aerated concrete block and a preparation method thereof. Autoclaved aerated concrete blocks include the following components by weight: 20-30 parts of cement, 25-35 parts of quicklime, 5-10 parts of gypsum, 20-30 parts of fly ash, 30-45 parts of ceramic waste, gas 3-5 parts of water-retaining agent, 3-5 parts of water-retaining agent, 5-10 parts of cold water flower through stem, 5-8 parts of cyclamen, 7-12 parts of pineapple fiber, 10-15 parts of adsorbent, 3.5-5 parts of ammonium polyphosphate , 4-8 parts of graphene oxide, 80-100 parts of water; the adsorbent includes the following components: eggshell membrane powder, chitosan, corn starch, titanium dioxide, silver-loaded manganese dioxide, nanoclean stone, diatomaceous earth, Eggshell powder. The autoclaved aerated concrete block of the present application has the advantages of strong adsorption capacity for formaldehyde, benzene, ammonia and other harmful substances, and can also prevent moisture and corrosion of steel bars.

Description

technical field [0001] The present application relates to the technical field of building materials, more specifically, it relates to an autoclaved aerated concrete block and a preparation method thereof. Background technique [0002] Autoclaved aerated concrete block is a wall building material that integrates heat preservation and enclosure. It mainly has excellent properties such as light weight, good heat preservation performance, good fire resistance performance, wide source of raw materials, and low energy consumption. Autoclaved aerated concrete blocks are mainly divided into autoclaved sand aerated concrete blocks and autoclaved fly ash aerated concrete blocks. The advantages of autoclaved sand aerated concrete blocks are high strength, low thermal conductivity, and frost resistance. Good performance, the advantage of autoclaved fly ash aerated concrete is that industrial waste can be utilized to realize resource reuse. [0003] However, raw materials such as indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B40/02C04B38/02
CPCC04B28/14C04B40/024C04B38/02C04B2201/50C04B2201/20
Inventor 杨吉寿郑守勇
Owner 青岛天利兴达新型建材有限公司