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Lightweight thermal-insulation aerated building block and preparation method thereof

An aerated block and thermal insulation technology, applied in the field of building materials, can solve the problems of low compressive strength, weak bubble binding force, small cell diameter and small cell diameter, etc., to achieve strong overall bearing capacity, improve compressive strength, The effect of evenly distributed air bubbles

Active Publication Date: 2022-06-03
韶关市顺展新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing technology, resting and steaming are required, which takes a long time. Although the air bubbles in the blank are small, as time goes by, the aggregate in the blank will precipitate, which will cause the consistency of the blank to be inconsistent. The binding force is unevenly distributed, and the closer to the surface, the weaker the binding force on the bubbles. Therefore, the phenomenon that the diameter of the cells at the bottom is smaller and the diameter of the cells closer to the surface is larger
[0006] Due to the large diameter of the cells close to the surface, the density of the aerated block will be lower as it gets closer to the surface, resulting in a decrease in strength, and the aerated block is more prone to local damage, reflecting the lower overall compressive strength and difficulty Meet engineering needs, therefore, there is still room for improvement

Method used

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  • Lightweight thermal-insulation aerated building block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A preparation method of a light-weight thermal insulation aerated block, comprising the following steps:

[0053] Step 1), put 100kg of water, 3kg of thickening agent, and 0.5kg of acetone into the stirring tank, rotate at 60r / min, stir for 1min, and mix well to obtain an acetone solution.

[0054] Step 2), put 43kg of cement, 94kg of fly ash, 132kg of lime, and 1150kg of sand into the acetone solution, the rotating speed is 45r / min, stirred for 3min, and mixed evenly to obtain a mixing material.

[0055] Step 3), pouring the mixture into the mold, tamping, and discharging air bubbles to form an embryo body.

[0056] Step 4), sending the embryo body into the steaming equipment, heating and steaming, the steaming temperature is 48°C, the steaming pressure is 0.3MPa, and the steaming is 130min.

[0057] In step 5), the steam curing temperature was raised to 54.5° C., the steam curing pressure was 0.5 MPa, and the steam curing was performed for 85 min.

[0058]In step 6)...

Embodiment 2

[0062] A preparation method of a light-weight thermal insulation aerated block, comprising the following steps:

[0063] Step 1), put 100kg of water, 4kg of thickening agent, and 0.55kg of acetone into the stirring tank, rotate at 60r / min, stir for 1min, and mix well to obtain an acetone solution.

[0064] Step 2), put 44kg cement, 97kg fly ash, 136kg lime, 1165kg sand into the acetone solution, rotate speed 45r / min, stir for 3min, and mix well to obtain a mixing material.

[0065] Step 3), pouring the mixture into the mold, tamping, and discharging air bubbles to form an embryo body.

[0066] Step 4), sending the embryo body into the steaming equipment, heating and steaming, the steaming temperature is 48.5°C, the steaming pressure is 0.35MPa, and the steaming is 125min.

[0067] Step 5), the steam curing temperature was raised to 54.8° C., the steam curing pressure was 0.55 MPa, and the steam curing was performed for 83 min.

[0068] In step 6), the steam curing temperatur...

Embodiment 3

[0072] A preparation method of a light-weight thermal insulation aerated block, comprising the following steps:

[0073] Step 1), put 100kg of water, 5kg of thickening agent, and 0.6kg of acetone into the stirring tank, rotate at 60r / min, stir for 1min, and mix well to obtain an acetone solution.

[0074] Step 2), put 45kg of cement, 100kg of fly ash, 140kg of lime, and 1180kg of sand into the acetone solution, rotate at 45r / min, stir for 3min, and mix evenly to obtain a mixing material.

[0075] Step 3), pouring the mixture into the mold, tamping, and discharging air bubbles to form an embryo body.

[0076] Step 4), sending the embryo body into the steaming equipment, heating and steaming, the steaming temperature is 49°C, the steaming pressure is 0.4MPa, and the steaming is 120min.

[0077] Step 5), the steam curing temperature was raised to 55°C, the steam curing pressure was 0.6 MPa, and the steam curing was performed for 80 min.

[0078] Step 6), the steam curing temper...

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Abstract

The invention relates to the field of building materials, and particularly discloses a lightweight thermal-insulation aerated building block and a preparation method thereof. The preparation method of the lightweight thermal-insulation aerated building block comprises the following steps: step 1) uniformly mixing water, a thickening agent and acetone to obtain an acetone solution; 2) adding cement, fly ash, lime and sand into an acetone solution, and uniformly mixing to obtain a mixed material; the method comprises the following steps of (1) preparing a mixture, (2) adding the mixture into a mold, (3) pouring the mixture into the mold to form a blank body, (4) heating and steam-curing the blank body for 120-130 minutes at the steam-curing temperature of 48-49 DEG C, (5) raising the steam-curing temperature to 54.5-55 DEG C and steam-curing for 80-85 minutes, (6) raising the steam-curing temperature to 60-61 DEG C and steam-curing for 5-6 hours, and (7) demolding to obtain the lightweight heat-insulating aerated building block.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a light-weight thermal insulation aerated block and a preparation method thereof. Background technique [0002] Air-entrained block is a new lightweight and porous building material with good thermal insulation effect and is widely used in high-rise buildings. [0003] Existing air-entrained blocks often use aluminum powder as a foaming agent, and hydrogen is generated by reacting aluminum powder with water to form pores in the block. [0004] The aluminum powder will be oxidized in the air to form an inert alumina protective film, which prevents the aluminum from contacting with water. When the aluminum powder is added to the mixing material, the mixing material is an alkaline solution, and the alumina will dissolve to form meta-aluminate. When the aluminum oxide is dissolved, the metal aluminum will react with water, replace the hydrogen in the water, and generate gelatinous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/10C04B28/04C04B40/02C04B111/40
CPCC04B28/04C04B40/024C04B2111/40C04B2201/20C04B2201/50C04B22/064C04B18/08C04B14/06C04B24/008C04B24/383C04B38/10C04B38/0067Y02W30/91
Inventor 刘兴昌吴毛林
Owner 韶关市顺展新型材料有限公司
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