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Preparation method of autoclaved aerated concrete block

A technology of concrete blocks and autoclaved air filling, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of increased humidity, poor moisture insulation ability, and difficult dehumidification of air conditioning systems, etc., to achieve Enhance the firmness, enhance the waterproof and moisture-proof performance, and improve the effect of waterproof and moisture-proof performance

Inactive Publication Date: 2014-09-03
陆玉珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hygroscopicity of concrete blocks will also absorb the moisture in the outside air and slowly penetrate into the room, increasing the indoor humidity and bringing great difficulties to the dehumidification of the air conditioning system
In this sense, although the autoclaved aerated concrete block has excellent heat and sound insulation properties, its water resistance and moisture resistance are not good, which greatly limits the application range of this new material.

Method used

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  • Preparation method of autoclaved aerated concrete block
  • Preparation method of autoclaved aerated concrete block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The autoclaved aerated concrete block of this embodiment includes the following components in parts by weight: 60 parts of fly ash, 10 parts of lime, 5 parts of gypsum, 5 parts of cement, 0.1 part of aluminum powder and 98% mass fraction of acrylic resin emulsion 0.1 part, the preparation steps are as follows:

[0018] (1) Add 80 parts by weight of water to grind the corresponding parts by weight except 0.1 part of acrylic resin emulsion, and make a homogeneous slurry after stirring;

[0019] (2) Let the prepared homogeneous slurry stand for 10 minutes, and pour it into the mold box after removing the supernatant;

[0020] (3) Send the mold box in step (2) into the drying room; adjust the temperature of the drying room so that the drying room maintains a pre-curing temperature of 40 degrees Celsius for 1 hour, and cut it into block embryos immediately after the pre-curing;

[0021] (4) After the cutting process in step (3), apply 0.1 part of 98% acrylic resin emulsion ...

Embodiment 2

[0024] The autoclaved aerated concrete block of this embodiment includes the following components in parts by weight: 72 parts of fly ash, 15 parts of lime, 9 parts of gypsum, 7 parts of cement, 1 part of aluminum powder and 98% mass fraction of acrylic resin emulsion 2 parts, the preparation steps are as follows:

[0025] (1) Add 100 parts by weight of water to grind the corresponding parts by weight except 3 parts of acrylic resin emulsion, and make a homogeneous slurry after stirring;

[0026] (2) Let the prepared homogeneous slurry stand for 20 minutes, and pour it into the mold box after removing the supernatant;

[0027] (3) Send the mold box in step (2) into the drying room; adjust the temperature of the drying room so that the drying room maintains a pre-curing temperature of 58 degrees Celsius for 3 hours, and cut into block embryos immediately after the pre-curing;

[0028] (4) After the cutting process in step (3), within 30 minutes of stopping the pre-cultivation,...

Embodiment 3

[0031] The autoclaved aerated concrete block of this embodiment includes the following components in parts by weight: 62 parts of fly ash, 12 parts of lime, 9 parts of gypsum, 5 parts of cement, 0.5 part of aluminum powder and 98% mass fraction of acrylic resin emulsion 1 part, the preparation steps are as follows:

[0032] (1) Add 90 parts by weight of water to grind the corresponding parts by weight except 1 part of acrylic resin emulsion, and make a homogeneous slurry after stirring;

[0033] (2) Let the prepared homogeneous slurry stand for 10 minutes, and pour it into the mold box after removing the supernatant;

[0034] (3) Send the mold box in step (2) into the drying room; adjust the temperature of the drying room so that the drying room maintains a pre-curing temperature of 50 degrees Celsius for 2 hours, and cut it into block embryos immediately after the pre-curing;

[0035] (4) After the cutting process in step (3), within 20 minutes of stopping the pre-cultivatio...

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Abstract

The invention discloses a preparation method of an autoclaved aerated concrete block. The autoclaved aerated concrete block comprises the following components in parts by weight: 60 to 72 parts of coal ash, 10 to 15 parts of lime, 5 to 9 parts of gypsum, 5 to 7 parts of cement, 0.1 to 1 part of aluminite powder and 0.1 to 2 parts of acrylic resin emulsion with the mass fraction of 98%. The preparation method comprises the following steps: adding the components in corresponding parts by weight except 0.1 to 3 parts of acrylic resin emulsion into 80 to 100 in parts by weight of water, grinding and evenly stirring so as to prepare homogeneous slurry; standing the prepared homogeneous slurry for 10 to 20 minutes and pouring into a mold box after removing a supernatant liquid; sending the mold box into a drying room and precuring for 1 to 3 hours by keeping a precuring temperature in the drying room within 40 DEG C to 58 DEG C; cutting into a block blank as long as the completion of the precuring; and coating 0.1 to 2 parts of acrylic resin emulsion with the mass fraction of 98% on the surface of the block blank within 30 minutes after the stopping of the precuring, thereby obtaining the autoclaved aerated concrete block.

Description

technical field [0001] The invention relates to a method for preparing an autoclaved aerated concrete block, which belongs to the field of construction engineering materials. Background technique [0002] Autoclaved aerated concrete block is a new material in the field of construction. It uses calcareous materials (such as cement, lime) and siliceous materials (such as sand, fly ash, slag) to add aluminum powder as an air-entraining agent. After adding water and stirring, pouring, gas expansion, pre-curing and cutting , and then cured by high-pressure steam to form porous silicate blocks. Because of the porous material of the block, it has the characteristics of sound insulation, light weight, good pressure resistance, and excellent heat preservation. Its processability is also very good, and it can even be cut with a saw like wood. Therefore, the material is a good substitute for the solid bricks currently widely used in the construction field. [0003] In recent years, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B18/08
CPCY02W30/91
Inventor 陆玉珍
Owner 陆玉珍
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