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Steamed wood fiber aerated concrete block and preparation method thereof

A technology of air-entrained concrete and wood fiber, which is applied to ceramic products, climate sustainability, and other household appliances. It can solve problems such as reduced sound insulation effect, influence on material promotion, and cracking of plastering layers, so as to improve utilization rate, Reduced consumption and low production energy consumption

Active Publication Date: 2014-12-10
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the material itself and construction factors, the use of autoclaved aerated concrete blocks often causes problems such as cracking of mortar joints, cracking of plastering layers, hollowing, leakage, and reduced sound insulation effects, which affect the material. Promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing an autoclaved wood fiber aerated concrete block, comprising the following steps:

[0024] (1) Mix 5 parts of cement, 15 parts of quicklime, 5 parts of gypsum, 35 parts of fly ash, and 40 parts of wood fiber pulp in the mass ratio and mix them evenly, then add 60 parts of water and mix them for 2 hours to form a slurry;

[0025] (2) Add 0.7 parts of aluminum powder paste to the slurry and stir for 30s, the slurry will expand to form uniform and fine pores;

[0026] (3) The slurry in step (2) is statically stopped and precured for 1 hour, and the slurry is thickened and hardened into an aerated concrete body;

[0027] (4) Cut the concrete blank into block blanks, put them into an autoclave and cure them with high-pressure saturated steam for 10 hours to obtain finished products.

[0028] The mass percentage content of calcium oxide in the quicklime is 60-70%.

[0029] In the step (4), the pressure inside the autoclave is 1.5MPa, and the temperatur...

Embodiment 2

[0031] A method for preparing an autoclaved wood fiber aerated concrete block, comprising the following steps:

[0032] (1) Mix and stir 10 parts of cement, 17 parts of quicklime, 3 parts of gypsum, 40 parts of fly ash, and 30 parts of wood fiber pulp in mass proportion, and then add 65 parts of water to mix and stir for 3 hours to form a slurry;

[0033] (2) Add 0.75 parts of aluminum powder paste to the slurry and stir for 45s, the slurry will expand to form uniform and fine pores;

[0034] (3) The slurry in step (2) is statically stopped and pre-cured for 1.5 hours, and the slurry is thickened and hardened into an aerated concrete body;

[0035] (4) Cut the concrete blank into block blanks, send them into an autoclave and cure them with high-pressure saturated steam for 12 hours to obtain finished products.

[0036] The mass percentage content of calcium oxide in the quicklime is 60-70%.

[0037] In the step (4), the pressure inside the autoclave is 1.5MPa, and the temper...

Embodiment 3

[0039] A method for preparing an autoclaved wood fiber aerated concrete block, comprising the following steps:

[0040] (1) Mix 5 parts of cement, 20 parts of quicklime, 10 parts of gypsum, 30 parts of fly ash, and 35 parts of wood fiber pulp in the mass ratio and mix them evenly, then add 70 parts of water and mix them for 4 hours to form a slurry;

[0041] (2) Add 0.8 parts of aluminum powder paste to the slurry and stir for 60s, the slurry will expand to form uniform and fine pores;

[0042] (3) The slurry in step (2) is statically stopped and precured for 2 hours, and the slurry is thickened and hardened into an aerated concrete body;

[0043] (4) Cut the concrete blank into block blanks, send them into an autoclave and cure them with high-pressure saturated steam for 14 hours to obtain finished products.

[0044] The mass percentage content of calcium oxide in the quicklime is 60-70%.

[0045] In the step (4), the pressure inside the autoclave is 1.5MPa, and the tempera...

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PUM

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Abstract

The invention relates to a preparation method of a steamed wood fiber aerated concrete block. According to the preparation method, a process for manufacturing a steamed aerated block is adopted, and wood fiber is adopted to replace a part of a coal ash material of the components, so that a novel filled wall building body material is prepared. By adopting the steamed wood fiber aerated concrete block, both the materials such as the coal ash can be saved, and waste materials such as waste newspaper, books and waste mold plates with high wood fiber content can be utilized. Due to addition of the wood fiber in the building body material, the weight of a building block is further reduced, the building block can be well bonded with special mortar in construction, and moreover relatively good heat-preservation property is achieved.

Description

technical field [0001] The invention relates to a thermal insulation material for interior and exterior walls, and more specifically relates to an autoclaved wood fiber aerated block and a preparation method thereof. Background technique [0002] With the continuous development of the innovation of wall insulation materials, various wall insulation materials are changing with each passing day. Autoclaved aerated concrete blocks have been widely used in construction projects. The application of building wall materials and autoclaved aerated concrete blocks has a good development prospect. However, due to the characteristics of the material itself and construction factors, the use of autoclaved aerated concrete blocks often causes problems such as cracking of mortar joints, cracking of plastering layers, hollowing, leakage, and reduced sound insulation effects, which affect the material. promotion. Contents of the invention [0003] The invention aims at the deficienci...

Claims

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Application Information

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IPC IPC(8): C04B28/10C04B38/02C04B22/14C04B18/08C04B18/24
CPCY02W30/91
Inventor 尹亮
Owner CHINA MCC17 GRP
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