Autoclaved aerated concrete block and preparation method thereof

A concrete block and autoclaved aeration technology, which is applied to ceramic products, other household appliances, applications, etc., can solve the problem of poor air-entraining effect of aerated concrete, great influence of bubble retention time, and misalignment of slurry thickening degree. and other problems, to achieve the effect of improving the foaming effect, light weight and increasing wind load

Inactive Publication Date: 2018-09-28
南京兴陶预制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After the aluminum powder is added to this sand aerated concrete, the aluminum powder reacts with water in an alkaline environment to release hydrogen gas, which forms tiny bubbles in the air-entrained concrete slurry. During the generation of bubbles, the aerated concrete slurry The viscosity of the sand and the surface tension of the foam have a great influence on the retention time of the bubbles. The retention time of the bubbles is directly related to the effect of the foaming. This kind of sand air-entrained concrete only controls the gas generation through the thickening of the slurry. When the raw material When the quality of the slurry fluctuates, there is a certain error in the process of adjusting the thickening degree of the slurry
[0006] Sexuality, may lead to poor air entrainment effect of air-entrained concrete

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

Embodiment 1

[0064] Embodiment 1: (1) Preparation of slurry: in parts by weight, take 500 parts of modified fly ash and 50 parts of water, add water in stages to the modified fly ash, and carry out primary pulping, pulping The final mixture undergoes two-stage stirring and three-stage stirring, and the slurry is obtained after being fully mixed;

[0065] (2) Preparation of dry material: in parts by weight, take 80 parts of cement and 150 parts of quicklime, and fully stir to obtain dry material;

[0066] (3) Preparation of aluminum paste: in parts by weight, take 5 parts of aluminum powder paste, feed and stir, and fully mix the scaly aluminum powder paste into an aluminum paste with uniform texture;

[0067] (4) Ingredients: Take the slurry, dry material and aluminum paste prepared in steps 1, 2, and 3, by weight, and then take 50 parts of water, mix and pour, add 0.5% modified foam stabilizer while stirring Stirring is carried out at 45°C, and the stirring time is not less than 15 minut...

Embodiment 2

[0071] Embodiment 2: (1) Preparation of slurry: in parts by weight, take 800 parts of modified fly ash and 100 parts of water, add water in stages to the modified fly ash, and carry out primary pulping, pulping The final mixture undergoes two-stage stirring and three-stage stirring, and the slurry is obtained after being fully mixed;

[0072] (2) Preparation of dry material: in parts by weight, take 120 parts of cement and 200 parts of quicklime, and fully stir to obtain dry material;

[0073] (3) Prepare aluminum paste: in parts by weight, take 10 parts of aluminum powder paste, feed and stir, and fully mix the scaly aluminum powder paste into an aluminum paste with uniform texture;

[0074] (4) Ingredients: Take the slurry, dry material and aluminum paste prepared in steps 1, 2 and 3, by weight, and then take 100 parts of water, mix and pour, add modified foam stabilizer 1.5 while stirring Stirring is carried out under the condition of 45°C, and the stirring time is not les...

Embodiment 3

[0078] Embodiment 3: (1) Preparation of slurry: in parts by weight, take 650 parts of modified fly ash and 75 parts of water, add water in stages to the modified fly ash, and carry out primary pulping, pulping The final mixture undergoes two-stage stirring and three-stage stirring, and the slurry is obtained after being fully mixed;

[0079] (2) Preparation of dry material: in parts by weight, take 100 parts of cement and 175 parts of quicklime, and fully stir to obtain dry material;

[0080] (3) Preparation of aluminum paste: in parts by weight, take 8 parts of aluminum powder paste, feed and stir, fully mix the scaly aluminum powder paste into an aluminum paste with uniform texture;

[0081] (4) Ingredients: take the slurry, dry material and aluminum paste prepared in steps 1, 2 and 3, by weight, and then take 75 parts of water, mix and pour, add modified foam stabilizer 1 while stirring Stirring is carried out under the condition of 45°C, and the stirring time is not less ...

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Abstract

The invention discloses an autoclaved aerated concrete block, and belongs to the technical field of building materials. The problem of instable bubbles generated by existing aerated concrete during foaming is solved. The autoclaved aerated concrete block includes the following components of: in parts by weight, 80-120 parts of cement, 150-200 parts of lime, 500-800 parts of modified fly ash, 5-10parts of aluminum paste, 100-200 parts of water and 0.5-1.5 parts of a modified foam stabilizer. The autoclaved aerated concrete block has a good foaming effect, so that concrete is filled with denseair bubbles, and the autoclaved aerated concrete block has good thermal insulation performance, so that improvement of the quality and qualification rate of the product is facilitated.

Description

technical field [0001] The invention relates to the technical field of aerated concrete materials, in particular to an autoclaved aerated concrete block and a preparation method thereof. Background technique [0002] Air-entrained concrete, as a new type of building material with low energy consumption and environmental protection, belongs to the building materials promoted by the state. Air-entrained concrete blocks have the characteristics of light weight, high strength, heat preservation, heat insulation, sound absorption, fire prevention, etc., and are widely used in frame structures, external wall filling and internal wall partitions of cast-in-place concrete structures, and can also be used in anti-seismic ring beam structures The outer wall of a multi-storey building or the thermal insulation composite wall is also used for the thermal insulation and heat insulation of the roof of the building. [0003] At present, new wall materials based on autoclaved aerated concr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/10C04B20/02
CPCC04B20/023C04B28/10C04B38/02C04B2201/20C04B2201/50C04B7/00C04B18/08C04B22/04C04B22/002C04B24/085C04B24/16
Inventor 高丹钱海
Owner 南京兴陶预制品有限责任公司
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